ENGINE REVIEWER

ENGINE OPERATIONAL COMPETENCE # 4 OPERATE MAIN AUXILIARY MACHINERY AND ASSOCIATED CONTROL SYSTEMS Question Choice A 1. Cylinder oil is used for _________. 2-stroke engine

Choice C 4-stroke engine

Choice D gasoline engine

Answer A

2.

increase compressor efficiency Ejector

inject water vapor into the compressed air Condenser

C

impeller

piston

C

a stoppage of condenser cooling water flow oil will be lost through the water discharge ports

lack of refrigerant

C

oil has a tendency to emulsify in the bowl

C

3.

4. 5.

6.

Choice B 4-stroke and 2 stroke engine An air compressor is equipped prevent reduce the with an intercooler and an overheating of first compressed air aftercooler to___________ . stage valves charge density What component of the freshwater Shell Evaporator evaporator on board use to boil seawater, using the main engine jacket cooling water? One of the major components of gear screw centrifugal pump is___________. The high pressure cut-out switch accumulation of restricted suction will stop the refrigeration refrigerant in the filter compressor when there is______. crankcase oil If the bowl of a disk type purifier will act as oil solids will be centrifugal purifier when operated a clarifier at the deposited only at as a separator is not primed, discharge ring the intermediate the______. top disk

B

7. The storage tank for liquid refrigerant in a refrigeration system is called __________. 8. Part of centrifugal disc purifier use to hold discs in place and directs the flow of dirty liquid to the bottom then to the discs as the oil flows upward is called ____________. 9. The high pressure side of the refrigeration systems starts from the _______. 10. The dehydrator of a refrigeration system is located____________. 11. A suitable location for the installation of an impulse type steam trap would be in the__________ -

purging tank

receiver

dehumidifier

charging tank

B

top disc

bowl

main cylinder

distributor

D

compressor to the condenser

compressor to the expansion valve

evaporator to the compressor

expansion valve to B the compressor

before expansion valve steam supply line to a feedwater heater

after evaporator

after oil separator

A

horizontal run of drain line from the lowest point at the outlet of the heat exchanger Impulse

D

Bimetallic

before liquid receiver vacuum drag line from the atmospheric drain tank to the main condenser Ball float

Air cleaner

Unloader

Paper cartridge

A

12. Which of the listed types of steam Thermostatic traps operates on the principle that hot water flashes to steam when its vapor pressure is reached? 13. A material use to protect the Intake filter internal parts of air compressor from solid particles which can be sucked along with fresh air is called____. 1

drain line from a high point in the main steam line expansion loop

COMPETENCE # 4 OPERATE MAIN AUXILIARY MACHINERY AND ASSOCIATED CONTROL SYSTEMS

D

14. Air leaking into a flash type distilling plant could occur through_______. 15. Unloader in air compressor is use to________. 16. Which of the listed operations will cause an automatically controlled refrigeration compressor to restart? 17. A high reading at a salinity cell located in the loop seal between two stages of a flash type evaporator indicates_____. 18. Component of an engine used to increase scavenging air is called ___________. 19. The operation of a thermostatic steam trap depends upon the__________.

20. The low pressure side of a refrigeration system is considered to exist from the ______.

2

gasketed joints, cooling tubes, and valve stem

gasketed joints, valve stem, and gage glass packing equalize first stage prevent excessive and second stage load on the motor pressure during starting An increase in the Closing of the suction pressure solenoid valve

gasketed joints, cooling tubes, and gage glass packing drain water from cylinder

salinometer, valve steam, and gage glass packing

B

B

Closing of the expansion valve

release excess oil from the compressor A decrease in the suction pressure

carryover in the first- stage

chill shocking is necessary to remove scale

leakage at the second- stage condenser

faulty operation of the brine overboard pump

A

scavenging flaps

turbocharger

engine blower

scavenging valve

B

difference in movement of two dissimilar bimetallic strips not fastened together expansion valve to the evaporator

fact that hot water under pressure tends to flash into steam when its vapor pressure is rapidly reduced evaporator to the condenser

A

change in the action of a float amount of vapor within a chamber produced within an enclosed chamber

expansion valve to condenser to the the compressor expansion valve


A

A

21. A protective device use to prevent over torque during starting of an Air Compressor is called_____. 22. Condensers located in the various stages of the flash evaporator are cooled by_________. 23. The separation chamber of the purifier is called ________. 24. Type of pump which is dependent of the head is______________. 25. It refers to an internal combustion engine practice, where there is a necessity of heating the oil, to ensure easy flow and good atomization. 26. Main component of the engine to regulate speed is the ___________. 27. A badly leaking refrigeration compressor discharge valves will cause __________. 28. The by-products of oxidation, as a result of water contamination of hydraulic oil, are generally______. 29. The purpose of wear ring in the centrifugal pump is to ___________. 3

reliever

air release device

solenoid

unloader

D

seawater

air

distillate

brine

A

pilot valve assembly reciprocating pump Re-circulating

bowl

light liquid chamber centrifugal pump

B

piston pump

heavy liquid chamber screw pump

Tracing steam

Pre-heating

Pilot injection

C

telegraph

fuel rack

valve gear

governor

D

damage to the condenser

flooding of the receiver

constant running of the compressor

overfeeding of the expansion valve

C

gums, varnishes, and acids

D

removed by cellulose type filters

always neutralized harmless and have by oil additives no effect on system components maintain alignment prevent leakage minimize wear of of shaft impeller and casing


D

prevent damage to C shaft

30. Short cycling of a refrigeration compressor refers to_____________. 31. The heat gained per pound of refrigerant in the evaporator is known as the_______________. 32. Diesel engine jacket water is used in the fresh water distillation process as the __________. 33. Parts of the pump used to maintain the alignment of the pump are_____. 34. Which characteristic of the theoretical Otto cycle does not occur in the theoretical Diesel cycle. 35. Stern tube is used to__________.

36. If the temperature of the fuel oil entering in atomizer is too low, the burner will __________. 37. Salinity cell is installed in the distilling unit to indicate the ____________. 38. Main engine lube oil sump tank is located __________. 4

running too slow

frequently starting and stopping

frequently grounding out

running too fast

B

sensible heat

specific heat of vaporization

refrigerating effect

latent heat of vaporization

C

primary means of producing a vacuum within the distiller wear rings

means of heating the feedwater

coolant for the distillate

coolant for the brine cooler

B

bearings

impeller

lantern ring

B

Rapid pressure decrease during compression.

Rapid volume increase during combustion.

The entire fuel charge is present for ignition.

No pressure increase during combustion.

C

transmit the power from main engine to propeller produce smoke white

reduce vibration of protect the engine support and seal engine from its axial thrust the propeller shaft

D

require more fuel for atomization

D

quantity of freshwater produced above the engine

leaking tube

produce heavy black smoke at any load condition quality of water produced next to the engine

C

at the same level as the main bearing


require more excess air for combustion amount of chemical to be added at the bottom of the engine

D

39. It is a form of energy which crosses the boundary of a system during a change of state produced by a difference of temperature between the system and its surroundings. 40. Burned gas from each cylinder is directed to the exhaust manifold which is part of___________. 41. The purpose of expansion valve is to__________.

Potential energy

first law of thermodynamics

Heat

Kinetic energy

2-stroke engine

both 4-stroke engine and 2 stroke engine change the gas to a liquid

4-stroke engine

internal A combustion engine

provide an orifice between the high pressure and low pressure side of the system top of the bowl cover

42. The inlet pipe connection of dirty oil in disc type centrifugal purifier is located at the __________. 43. The purpose of the low pressure maintain a preset cutout switch is to ____________. suction pressure to the compressor 44. Refrigerant is circulated through a refrigeration system by the ___________. 45. The liquid indicator sight glass is generally located in the ____________.

5

provide a chamber to speed-up the for the preflow of refrigerant expansion of the liquid

C

A

bottom of the bowl top and bottom of cover bowl cover

side of the bowl cover

A

operate at minimum efficiency

C

condenser

maintain liquid refrigerant at the suction of the compressor compressor

evaporator

B

high pressure vapor line

low pressure vapor high pressure line liquid line


start and stop the compressor at preset operating pressures expansion valve

low pressure liquid C line

46. If an air compressor intercooler pressure rises above normal, it usually indicates __________. 47. Breaking the fuel into fine spray to provide good combustion is called__________. 48. A squeaking sound occurring from within an operating reciprocating air compressor is an indication of_______. 49. A salinity indicating system functions on the basic principle of measuring the____. 50. Boiler fire side must be kept free of soot accumulations because ____. 51. A dehydrator installed in a refrigeration system is used to remove _____. 52. Fluctuations in the pressure and temperature of the steam supplied to the first-effect of a low pressure submerged tube distilling plant will cause _____. 53. In a refrigeration system, the amount of superheat absorbed by the refrigerant is adjusted at the _________. 6

dirty lube oil

dirty intercooler

hot environment

leaking valves

B

refining

purifying

honing

atomizing

D

tight compressor bearings

compressor overload

motor overload

badly leaking unloaders

A

hydrogen ion concentration of water soot interferes with the flow of feedwater oil from the refrigerant

electrical conductivity of water the steam drum internals will become clogged refrigerant from the oil

electrical inductance of water the fuel oil heaters will become overloaded moisture from the system

specific gravity of water

B

soot insulates the boiler heating surfaces noncondensable gases and vapors

D

first effect scale formation to be loosened

pressure and temperature fluctuations in the entire unit

increased heat levels throughout the entire unit

decreased priming B and lower salinity distillate

condenser

expansion valve

evaporator

compressor


C

B

54. Salinity cell is installed in the distilling unit to indicate the______. 55. In the refrigeration system, the refrigerant absorbs the latent heat of vaporization in the______. 56. In a low pressure air compressor, the loss of volumetric efficiency normally results from________.

quantity of freshwater produced evaporator

leaking tube

heating of the air leaving the cylinders

adiabatic inaccurate valve compression in the timing intercooler

57. Air compressor cylinder unloader enable the compressor to_______.

vary their speed according to temperature and load plunger and barrel

change speed reduce according to compressed air overload demands charge density

maintain constant head in a system

allow easy release prevent water of air leakage

reduce air contamination

A

Sea water is heated to boiling temperature while under a vacuum. 50% over the working tension of the mooring line

Sea water is passed over heated plates in a thin film. the full breaking strength of the mooring line

Sea water is forced through a heated eductor

Heated sea water is injected into a vacuum chamber

D

half the breaking strength of the mooring line

the maximum B expected tension of the mooring line

58. Fuel oil enters the main engine cylinder through ______________. 59. The expansion tank for the jacket cooling water which is a closed cooling type is used to ___________. 60. Which of the following descriptions best identifies the operating principle of a flash-type evaporator? 61. A mooring winch should be equipped with mechanical brakes capable of holding_____. 7

compressor

starting valve


amount of chemical to be added condenser

fuel oil injector

quality of water produced

D

liquid receiver

A

constant A enlargement of the clearance expansion volume start and come up D to speed before air compression begins oil spill valve C

62. The degree of fuel atomization in a diesel engine cylinder depends primarily on _______. 63. The thermostatic expansion valve of a refrigeration system is opened ____________.

the size of the holes in the fuel nozzle and close by refrigerant pressure

64.

None of the stated A options

65.

66.

67.

68.

8

timing of the pump supply pressure to shape of the the pump combustion chamber by refrigerant by spring pressure and close by pressure and close and close by spring pressure by spring pressure refrigerant pressure Boyle's law can best be defined as the volume of an if the pressure is a body at rest _________. enclosed gas constant, the tends to remain at varies inversely volume of an rest. with the applied enclosed gas pressure, provided varies indirectly the temperature with absolute remains constant temperature Kinetic energy is associated with heat movement and degree of atomic _________. relative velocity and molecular motion The "general energy equation" thermal potential kinetic expresses energy in which of the following forms? The Brayton Cycle is one where constant increasing constant pressure the combustion event occurs at temperature pressure __________. Heat is defined as _________. stored potential thermal energy in stored kinetic energy transition energy


D

A

relative position in respect to datum reference level All of the options

B

All of the options

C

All of the options

B

D

9

69. Which of the following statements is NOT one of Newton's laws?

A body at rest tends to remain rest and a body in motion tends to remain in motion.

70. A theoretical engine cycle is a process that _________.

takes place in the combustor of the engine

71. Rotating flyweights acting against a spring force makes up a simple type of __________. 72. It is the state of a system wherein no heat flow takes place between its components.

governor

Thermal unsteady state

For every action there is an equal and opposite reaction.

If the pressure is constant, the volume of an enclosed dry gas varies directly with the absolute temperature.

An imbalance of C force on a body tends to produce an acceleration in the direction of that force which is directly proportional to the applied force and inversely proportional to the mass of the body. begins with certain begins with certain None of the stated B conditions, conditions, options progresses progresses to a through a series of steady state and additional stays there conditions and returns to the original conditions reducing valve safety valve feedwater A regulator Thermionic state

Thermal equilibrium


Thermal temperature

C

73. Which of the following represents the definition of energy?

74.

75. 76. 77.

energy is the capacity for producing and effect Which of the following statement is the magnitude of the force is friction acts so as true about the laws of friction? the force decrease independent of the to attract the up to a limiting area of contact motion of one value body relative to another Kinetic energy is the energy of the position temperature motion body has due to its Work is conveniently expressed in: pounds per minute kilograms per kilogram meter minute Power is the work done as 33,000 ft. pounds 2450 kilogram per unit of time

78. Vacuum refers to pressures 79. Specific heaat of a substance is defined as the heat required to raise the temperature of 80. Too high alkalinity of boiler waer may cause 81. The number of cubic feet of fresh water that wil weigh one ton is 82. The pressure due to a column of H2O one foot high is 83. Specific heat of water is:

10

energy is work that energy is the has been capacity of work completed being done

energy is produced power

C

the frictional force is greater than if motion is just to take place

B

horsepower

C

foot-pounds per minute work times distance below atmospheric zero gauge

D

1 lb. of it to 1oF

10 lbs. of it to 1oF

C

acidity

A

30.4 cu. Ft.

B

C

34 inches of mercury 1 lb. of it to 1oC

31 inches of mercury 1 kg. of it to 1oF

scale

corrosion

62 cu. Ft.

35.84 cu. Ft.

caustic embrittlement 24.5 cu. Ft.

.491 lbs/sq. in

.434 lbs/sq. in

.5 lbs/sq. in

.625 lbs/sq. in

B

1

10oF

100oC

212oF

A


C

84. Latent heat of evaporation of water is 85. 23oC reads in absolute degrees centigrade as 86. A pressure reading of 00.0 psig is theoritically equal to 87. Vacuum refers to pressures as 88. A motor ship cruising at average speed of 14.55 knots/hr. How far could it travel in one and one half day? 89. In a Roots-type rotary blower, the volume of air delivered is directly proportional to __________. 90. Enthalpy is the number of heat energy a sustance contains above 91. A mechanical and or hydraulic actin that prevents over correction of the energy medium supply in a governor which produces transient speed droop during a speed correction is known as 92. What pressure is usually carried on a gland sealing system 93. The temperature at which a vapor liquifies is called 94. A`reversable adiabatic process is also called: 11

100 BTU per lb

212 BTU per lb

100 calories per

970 BTU per lb.

D

123o AC

146o AC

276o AC

296o AC

D

14.7 psia

30.0 inches of vacuum zero gauge

00.0 psia

A

34 inches of mercury 480.15 miles

30.0 inches of water 32 inches of mercury 356.47 miles

below atmoshpheric 494.70 miles

D

engine speed

engine load

brake horsepower

brake specific fuel consumption

A

0 degree farenheit

212 degree farenheit sensitivity

B

100 degree celsius 32 degree farenheit Stability compensation

523.80 miles

dead brand

C

B

6 to 8 LBS gauge pressure dew point

4 to 5 LBS gauge 8 to 10 LBS pressure gauge pressure condensation point vaporation point

2 to 3 LBS gauge pressure moisture point

D

isobaric

isometric

isothermal

D


isentropic

B

95. A 200 PSI new boiler should be 400 PSI subjected to a hydrostatic pressure of 96. Steam which is in physical contact unsaturated team with the boiling water from which it has been generated is termed: 97. Saturated steam is a steam that has temperature at boiling point 98. Torque is a force which tend to compressive produce power 99. Boiler horsepower is equivalent to 33,000 ft. lb.

300PSI

500 PSI

250 PSI

B

pure steam

wet steam

saturated steam

D

contains moisture

B

work

has temperature contains no above boiling point moisture rotation stress

33,475 BTUper hour mechanical gauge

30,000 BTU per hour manometer

30,000 ft. lbs. per minute barometer

B

evaporation

fusion

condensation

C

give th victim warm liquid fusion

keep the boy cool

raise the feet

D

evaporation

vaporization

B

Archimedes principle

Parallelogram

Principle pf transmissilibility

Advance coefficient

A

potential energy into thermal energy

kinetic energy into thermal energy

thermal energy into kinetic energy

thermal energy into potential energy

C

100. Absolute pressure is accurately bourdon gauge indicated by 101. The process of changing a solid to vaporization a liquid is called the latent heat of 102. The proper treatment for shock is: raise the head 103. Heat extracted in the process of changing a liquid to a solid is called the latent heat of 104. What is the principle which states that buoyant force acting on a body partially or completely immersed in a fluid is equal to the weight of fliud displaced? 105. A turbine is mecanical device, which produces work by converting__________. 12

solidifcation


D

C

106. According to the fuel used this type of engine uses hih grade of fuel which is highly flammable __________________. 107. An engine which run with petrol (or paffin) as the fuel are sometimes called as ____. 108. At pressure of 1.013 bar, or atmspheric pressure at sea level, water boils at _______. 109. Find the area of a single cylinder engine whose piston diameter is 8.89 centimeters ___. 110. Heat exchanger used to heat the boiler feed water by means of waste gas as it passes thru series of tubes to the stack. 111. It is a series of events repeated in the same regular events________________. 112. It is defined as a product of the force and the distance travelled by the force measured along the line of action of the force . 113. It is part of the engine that lowers the revolution of the main engine in relation to the driven shaft speed ____. 13

Internal External Diesel engine combustion engine combustion engine

Gasoline engine

D

Internal Light oil engines combustion engine

Gasoline engine

Petrol engine

B

373 K

100º F

66º C

87º C

A

79.12 cm2

19.60 cm2

62.14 cm2

54.78 cm2

B

close condenser

economizer

oil heaters

fresh water heat

B

cycle

revolution

stroke

ratio

A

energy

work transfer

acceleration

heat transfer

B

Engine flywheel

Thrust bearing

Reduction gear

Vibration damper

C


114. It is scavenge system in a four stroke diesel engine where the intake and exhaust systems are controlled by intake and exhaust valve attached at the cylinder head ___. 115. It is study of the relationships between heat energy, work and the properties of matter, also of the conversions of heat energy and work by means of heat engines. 116. It is the hotness or coldness of the body. 117. __________ is the ratio of the volume of fuel charge at the beginning of the compression to the voulme at the end of compression . 118. It is the tranfer of heat energy from one molecule to molecule

Uniflow

Cross flow

Forced flow

Loop flow

D

energy

system

applied heat

boundary

C

intensity

quantity

energy

potential energy

A

compression stroke

Volume ratio

Compression ratio

Power stroke

C

radiation

conduction

convection

B

119. It is the transfer of heat energy through air,space, or vacuum. 120. Superheated steam is used in main turbine propulsion plants because superheated steam has ______.

evaporation

radiation

covection

combination of conduction and convection conduction

Less specific volume per pound than saturated steam

Less specific energy than saturated steam

Greater pressure than saturated steam

Greater heat energy per pound than saturated steam

D

14


B

121. The gas law represented by formula PV/T= constant is _____. 122. The kind of heat involves a transformation of matter from one physical state to anoter without changing its temperature. 123. The main engine RPM must be lowered so that it will conform wit te RPM design of the propeller. This can be done by the installation of a _______. 124. The quantity of heat is affected by the amount of _____ that is present in the substance heated. 125. The speed of the ship's propeller through the water is 12.5 knots, however due to slip, the sip covers a distance of only 287 nautical miles in 24 hours. Calculate what percentage of the propeller speed does the slip represent? 126. The volume swept by the piston from top dead center to bottom dead center is called__________. 127. This is the distance travelled by the piston from top to bottom or bottom to top ____. 128. This is the temperature of a liquid in which boiling occurs? 15

Charles' Law

Boyles' Law

Standard Gas Law C

applied heat

Combination Gas Law heat energy

latent heat

latent heat of condensation

A

Thrust bearing

Vibration damper

Turning gear

Reduction gear

D

mass

molecules

atoms

weight

A

10%

7.00%

6.80%

4.80%

D

compression ratio

piston displacement

length of stroke

swept volume

B

Top dead center

Revolution

Bottom dead center

Stroke

D

saturation temperature

superheated temperature

vaporization

latent heat

A


129. This kind of heat involves a transformation of matter form one physical state to another without changing its temperature. 130. This type of heat when added to a substance, it will result to a change in physical state without changing its temperature. 131. Turbulence is created in the cylinder in the cylinders of a diesel engine to ____________. 132. Two governors on diesel engines driving the same load require which of the following characteristics? 133. What are the product of kinetic viscosity and the density of the oil at the temperature 134. What is the equivalent of zero (0) Kelvin to degrees centrigade? 135. What kind of heat must be added to convert and ice (solid heat) to water (liquid state)? 136. When you are starting a diesel engine at temperature below 70 deg. F the functional resistance to turning will be ______.

16

latent heat of fusion

applied heat

sensible heat


D

sensible heat

latent heat


laten heat of vaporization

A

obtained injection lag

help mix fuel and air Speed droop and high sensitivity

decreases combustion pressures Speed droop, isochronous and high sensitivity

B

Speed droop and isochronous

increases combustion pressures Isochronous and high sensitivity

Absolute density

Absolute viscosity

Kinematics viscosity

Viscosity index

B

-273º C

-460º C

-32º C

-180º C

A


sensible heat


applied heat

A

Reduce by increasing lube oil pressure

Controlled by Directly reducing the proportional to compensation ratio lube oil viscosity


D

Eliminated by eatin C gthe intake air

137. With a decreasing scavenging air pressure and increasing scavenging air temperature, the specific fuel consumption of the engine will: 138. With referrence to anti-corrosive zincs when you do replace it with new one in case of sea water cooling engine? 139. With temperature held constant of a perfect gas , then the volume of a given mass is inversely proportional to the pressure of the gas is inversely proportional to the pressure of the gas 140. During a change in temperature, the heat involved is known as ___________ 141. If the pressure indicates 30 PSI what will be the equivalent in kgs/cm2? 142. It is the equivalent reading in Fahrenheit if the temperature reading is -40 degrees Celsius. 143. The pressure gauge indicates 2.5 kgs. Per cm2. What will be the pressure equivalent in pounds per square inch ( PSI )? 17

remains constant

not affect the engine performance

be reduced

increased

If the zinc became less than 40% of its original size

If the zinc became brittle at the time of inspection

If the zinc became less than 15% of its original size

If the zinc have A been in use for the last six months

combination gas law

Charle's Law

Boyle's Law

Standard Gas Law C

sensible

latent

total

residual

A

1.8

2.1

2.8

3.1

B

-32

-40

+32

+40

B

35.5

38.6

42.8

45.5

A


D

144. The relationship between viscosity Liquids with Liquids with and specific gravity is different viscosities different viscosities ___________ will always have will never have the the same specific same specific gravity gravity

Viscosity and specific gravity are directly proportional

145. The removing of moisture from air is a process known as _____ 146. Power is defined as the __________.

humidification

dehumidification

vaporization

rate of doing work

amount of work accomplished

Specific viscosity

distance through which an object is moved Kinematic viscosity Average viscosity

A

147. What is a measure of the internal resistance of the fluid to the movement of the plate? 148. The push or pull excerted on a body is called ___________. 149. What element would thickened the lubricating oil when added? 150. What law staes that if the pressure of a confined gas is constant, the volume is directly proportional to the absolute temperature? 151. In chemical notation a small suffix is used with the (symbol) letter to indicate the number of_________. 152. What is the distance from the centroidal axis of an area at which the entire area could be concentrated?

amount of force needed to overcome friction Absolute viscosity

Inertia

Moment

Force

Motion

C

Bentonite

Potassium

Zinc

Lead

A

Dalton's law

Kirchoff's law

Law of Heat flow

Charle's law

D

Atoms

Molecules

Weight

Mass

A

Moment of inertia

Moments of gyration

Mass moment of inertia

Mass of moment of composite bodies

C

18


Viscosity and D specific gravity are not related in that one does not define or limit the other evaporation B

A

153. The property of the body which resist changes in its state of rest or uniform motion in a straight called__________. 154. Which of the following describes the purpose of a striker of double plate? 155. What is the approximate composition of air by mass? 156. A tonnage tax is levied according to the (NOT ENGINEERING QUESTION) INVALID 157. What is the chemical symbols for fuel butane? 158. What is a measure of the rate on motion or speed of a body at any instant? 159. What is a measure of the tendency of a force acting in oppose along separate parallel lines of action? 160. What is the usual unit for moment of inertia of an area? 161. An object that is subject to a force for a very short time is said to have received a/an _________.

19

Kinetic energy

Potential energy

Inertia

It provides landing surface for the sounding bob of a tank sounding tape 23% oxygen and 77% nitrogen Gross tonnage of vessel

It provides to absorb machinery vibration

It provides a It provides to surface for the prevents valve application of force stem over travel

A

23% oxygen 77% hydrogen Displacement tonnage of the vessel C2H6

27% oxygen and 73% hydrogen Net tonnage of vessel

A

C4H10

27% oxygen and 73% nitrogen Maximum deadweight cargo tonnage on board C3H8

C7H16

A

Inertia

Velocity

Kinetic energy

Energy

B

Moment of force

Couple

Torque

Twisting moment

B

Millimeter square

Millimeter cube Force

Millimeter to the power Inertia

C

Momentum

Millimeter to the fourth power Impulse


Radius of gyration

C

D

B

162. What is the property of a body which causes it to (tend ) remain in its existing state of rest or motion until acted by some force tending to change its existing state? 163. What is considered in mechanics as the factor which tends to produce, modify or retard motion? 164. What is the relationship between viscosity and specific gravity?

Velocity

Kinetic energy

Gravity

Inertia

D

Force

Power

Work

Weight

A

Viscosity and specific gravity are directly proportional

Liquids with different viscosities will never have the same specific gravity

Different viscosities will always have the same specific gravity

Nitrogen

Hydrogen

Viscosity and D specific gravity are not related in that one does not define or limit the other Carbon B

8.01 m2

10.8 m2

10.9 m2

C

Friction

Torsion

Twisting moment

A

165. What element contain in the fuel Oxygen that takes no active parts during combustion in an Internal Combustion Engine? 166. Calcualte the area of ships steel 8.10 m2 plate measuring 1.8 meter wide and 6 meter long. 167. The turning moment which is the Torque product of a tangential force and the distance it acts from the axis of the rotation is called ___________.

20


168. What is the measure of the amount of solids classified as asphalts on carbon residue contained in an oil? 169. What could result in fuel oil having a low octane rating? 170. As we heat a gas at constant pressure, what happen to its volume? 171. The ratio of the absolute viscosity of oil to the specific gravity of oil is called ______. 172. The viscosity of the lube oil is rated in which of the following? 173. Determine the weight of a rectangular piece of 25.5 lbs. steel measuring 4.5 feet by 6.7 feet. 174. What is chemical symbol for fuel propane? 175. What is the ratio of fuel oil density to the density of water? 176. In diesel engines, which of the following is an equivalent of one horsepower? 177. The horsepower and speed capability utilized by the engine without interruption is the ___ rating: 21

Neutralization number

Precipitation number

Total base number Carbonized number

Improved cold weather starting Increases

Excessive fuel consumption Decreases

Reduced ignition lag Stays the same

Smoother engine B operation Comparable to the A initial volume

absolute viscosity

specific viscosity

kinetic viscosity

average viscosity

B

Second millimeter universal 591.2 lbs.

Saybolt minutes universal 329.9 lbs.

Saybolt second universal 768.8 lbs.

Saybolt millimeter universal 285.6 lbs.

C

C3H8

C7H16

C3h8

C7H16

A

Viscosity index

Specific gravity

Latent heat

Base number

B

0.5457kw

0.6457kw

0.7457kw

0.8457kw

C

Maximum rating

Intermittent rating

Continuous rating

Overall rating

C


B

C

178. A perfect vacuum is represented by gauge reading of ___________ 179. Solve the following equation: 2x + 5y= 20; Given y=5. Find the value of x? 180. If a continuous and steady flow of lube oil is provided, which of the listed pressures represents the lowest supply pressure at which a small high-speed bearing can be safely lubricated? 181. Which of the significant combustible elements of fuel oil is a major source of air pollution? 182. The power developed within the engine cylinder and can be measured by an engine indicator called ______________. 183. What is the ratio between the energy developed at the brake of the engine and the energy supplied? 184. Isentropic compression is sometimes known as

22

30 in. Hg

24 in. Hg

15 in. Hg

10 in. Hg

A

-2.5

3.5

-4.5

5.5

A

1 psig

5 psig

10 psig

15 psig

A

Hydrogen

Nitrogen

Vanadium

Sulphur

D

indicated power

shaft power

brake horse power torsion power

A

Brake thermal efficiency

Mechanical efficiency

Scavenge efficiency

Volumetric efficiency

A

constant volume compression

constant temperature compression

constant universal pressure compression

constant entropy compression

A


185. What is similar to volumetric volumetric scavenge efficiency but used to described 2- efficiency efficiency stroke engine where some gas maybe included with the air at the start of compression? 186. The completely insulated system isothermal process the junction is operated in ______________. polytrophic process 187. It is defined as the capacity for Energy Resistance doing work? 188. In actual gasses, the molecular only dependent on inelastic collisions are_____________. the momentum 189. Demulsibility is defined as the ability of an oil the measure of the _________________. separated from water in the lube water oil 190. A measure of resistance to moment of inertia mass moment of rotational acceleration called inertia _____________. 191. Any liquid with a flash point above flammable liquid combustible liquid 80° is a ______________. 192. What is more nearly practical Polytrophic Isothermal process? operation operation 193. The acceleration of the body is the law of inertia Newton's second directly proportional to the force law applied to it inversely is known as ______________. 194. What is the other name of inertia Third moment of Dimensional of an area? area moment of area 23


mechanical efficiency

thermal efficiency

B

adiabatic process

the isentropic process

C

Velocity

Inertia

A

plastic

not visible nor B known the temperature at an emulsion of A which oil flows different oil grades rapidly radius of gyration mass moment of B inertia to composite bodies coal base oil synthetic base oil B Adiabatic operation mutual inductance law

Poly-is operation

Second moment area

Sectional moment of area

A

Newton's law of B action and reaction

C

195. In the conservation of energy the heat rejected must be equal to _______. 196. It is the usual unit for moment of inertia of an area millimeter? 197. What is a compression ratio?

198. The transfer of heat through electromagnetic flue wave an always travel with the gas is called the _________________ 199. Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance? 200. Which of the following statements is correct concerning heat transfer?

24

heat added

heat output

heat partially added

heat not in thermal A conductor

Square

Cube

To the fifth power

C

Ratio of the piston displacement plus clearance radiation heat transfer

Volume clearance

To the fourth power Piston clearance

Ratio of the piston and liner

A

volt-amp transfer

thermal convection

universal conduction

A

Radiation

Conduction

Natural convection Any of the options

A

Heat is given off from a high temperature region known as a heat sink

Heat transfer rate is affected most by the size of the heat sink involved

Heat transfer rate is affected most by the temperature difference between the heat source and the heat sink

C


Heat transfer by radiation will only by mass motion of a fluid substance

201. Which of the following statements is correct regarding Archimedes principles stating that the resultant pressure acting on a body when immersed in a fluid?

Acts vertically upward through the center of gravity of the displaced fluid and is equal to the weight of the fluid displaced

202. The heat required to raise the temperature of 1 pound of any particular substance 1° F is called ______________. 203. Demulsibility of lube oil is defined as ______________. 204. Which of the following conditions must exist for heat to flow from one object to another?

Is proportional in magnitude and direction, regardless of the direction originally developed when the object was submerged

Is applied equal and in all directions throughout the vessel in which it is Contained

A

its specific heat

Will cause the body to have a reduction in mass equal in magnitude to the effective mass of the structure located above the line floatation its latent heat

a British thermal unit

its adiabatic heat

A

the ability of oil to separate from water the two objects must be in physical contact

the temperature at which oil flows rapidly the two objects must be the same size

a measure of the water in a lube oil system there must be an existing temperature differential specific humidity

an emulsion of different grades of oil there must be an existing weight differential

A

total humidity

A

205. The ratio of the weight of moisture absolute humidity contained in a given volume of air, to the weight of moisture that the same sample would hold if saturated, and expressed in grains called the _______________.

25

relative humidity


C

206. In the production of freshwater from seawater through a process of heating and cooling, the cooling phase of production is usually called ______. 207. Which of the following listed methods may be heat transferred from one body to another? 208. Which of the following statements represents the function the nozzle assembly performs in an impulse turbine?

evaporation

distillation

dehydration

condensation

D

Radiation

Convection

Conduction

all of the options

D

Converts the steam's thermal energy into kinetic energy by increasing its velocity, and directing if against the rotor blades

Provides an area where the steam is prevented from expanding prior to being directed against the rotor blades

Increase the velocity of the steam without a pressure drop across the impulse blading

209. When air contains some moisture, but is not saturated; the dew point temperature is 210. Which of the listed statements best describes specific heat?

between the wet and dry bulb temperature The amount of heat required to change the temperature of one pound of a material, one degree

equal to the total heat of air

Converts the A potential energy of steam thermal energy by increasing its velocity and directing it against the turbine bladders lower than the dry D bulb temperature

26

higher than the wet bulb temperature The amount of The amount of All of the options heat required to heat required to change the change the temperature of one temperature of one pound of ice, one pound butter, one degree F. degree F material, one degree


D

211. Which of the following statements best describes the phrase "the heat of respiration"?

The total amount of heat the body is absorbing when undergoing CPR

212. What is the potential energy of an object weighing 10 pounds at a height of 10 feet? 213. Which of the effects listed describes the changers in the velocity and pressure of the steam as it passes through a nozzle? 214. How much work would be accomplished if a 15 pound box were raised to the top of a 25 foot platform? 215. Thermal energy in transition is also referred to as ______________. 216. The equation "energy out" is a simple way stating the principle of the ____. 217. Which of the following statements represents the definition of energy?

27

The heat developed by air as it flows through inlet air filters in a operating diesel engine

10 ft-lb

The heat produced through the formation of carbon dioxide when harvested plant life absorbs oxygen 20 ft-lb

Velocity increases and pressure increases

Velocity increases and pressure decreases

Velocity decreases Velocity decreases B and pressure and pressure increases decreases

15 ft-lb

25 ft-lb

40 ft-lb

375 ft-lb

D

heat

power

horsepower

foot-pound

A

conservation of energy

conservation of matter

conversion of matter to energy

conversion of energy to mater

A

Energy is work that has been accomplished

Energy is the capacity for producing an effect

Energy is work being done

Energy in power

B


100 ft-lb

The heat developed by air as it flows through the air filters of an operating reciprocating compressor 1000 ft-lb

B

C

218. A measurement of .625 is equal to _____________. 219. An additive used to improve the ability of a lube oil to reduce friction is known as a/an __________. 220. Which of the following best describes the effect on the pressure and volume relationship with regards to saturation gases? 221. Which of the processes listed consumers the greatest amount of power and produces the greatest amount heat? 222. The tendency of a liquid to vaporize is indicated by its _____________. 223. The theoretical minimum compression ratio necessary to ensure compression ignition in a direct injection diesel engine is _______________. 224. The quality of heat required to raise the temperature of a unit mass of a substance is known as ________________.

28

1/2 inch

9/16 inch

suppressant additive

3/4 inch

C

dispersant additive extremely pressure additive

viscosity improper additive

C

As pressure As volume As volume decreases, volume increases, decreases, increases pressure increases pressure decreases Overcoming Overcoming rolling Overcoming fluid sliding friction friction friction

As pressure increases, volume increases

A

Overcoming oil wedge friction

A

fire point

pour point

flash point

boiling point

C

0.334027778

0.418055556

0.500694444

0.584027778

B

latent heat

sensible heat of condensation

specific heat

variable heat

C


5/8 inch

225. How many fathoms is the equivalent of one shot when measuring the ship's anchor chain? 226. For safety reasons, the most important chemical or physical property of fuel and lubricating oils to consider when heating them before use is their. _________. 227. It is considered the smallest tank constructed on board world wide vessels that is being used for heavy fuel oils. 228. At pressure of 1.013 bar, or atmospheric pressure at sea level, water boils at ____________. 229. What is the main purpose of lubrication? 230. The maintenance of the oil film of a lubricant is affected by the____________. 231. Which of the following statements is true regarding mechanical seals?

29

15

6

12

3

A

density

calorific value

viscosity

flash point

D

Collecting

Storage

Settling

Service

A

373 K

100° F

66°C

87°C

A

To create free passage of oil

To increase A efficiency of engine thicker grade of oil B

To reduce wear and tear

To carry heat away from moving parts thinner grade of oil working temperature of the engine Mechanical seals Mechanical seals maybe used in lieu are not suitable for of conventional use on fuel oil packing for any transfer pumps service other than saltwater


excessive "drag" of the moving parts of the engine By adjusting spring compression leakage may be reduced

Mechanical seals are normally lubricated and cooled by the fluid being pumped

D

232. Under the type of lubrication what do you call the condition where some lubricant is present but the two bearing surfaces in relative motion are not completely by the film of lubricant? 233. What grade of oil may cause a breakdown of the oil film, resulting in rapid wear and possible seizure of the working parts? 234. The property of oil that concerns the ease with which an oil flows through the oil pipe lines and spreads over the bearing surfaces is called_______________. 235. What is the equivalent of zero(0) degree Kelvin to degree centigrade? 236. In general if heat is added to a substance, the temperature of the substance will increase and if heat is taken away the temperature will______________. 237. It is known as the series of events repeated in the same regular events.

30

Boundary or "thin film" lubricant

Fluid or "thick film" Lubrication and lubrication viscosity

Reducing friction and wear

B

Thin

Heavy

Thick

Viscous

A

flow quality

viscosity

pour point

flash point

A

-273

-460

-32

-180

A

remain the same

gradually remain

decrease

be transferred

C

Revolution

Stroke

Cycle

Ratio

C


238. What will be the probable caused of lube oil from main propulsion machinery having an increases neutralization number? 239. The detergent are used in lubricating oils MAINLY to ________________. 240. What is the best way of checking heat cracks? 241. A high reading of 100 or more viscosity index given to an oil indicates a ______________. 242. An oil additive used or added to keep oil fluid at low temperature is_________________. 243. One of the factors that affect the air-conditioning load is______________. 244. The lube oil temperature leaving the lube oil coolers is regulated by throttling the__________. 245. What is the equivalent of zero(0)degree Kelvin to degrees centigrade? 246. It is the type of heat when added to a substance, will cause an increase in temperature without changing it physical state. 31

acidity has increased

viscosity has decreased

demulsibility has improved

tendency to foam is guaranteed to occur

A

reduce the viscosity number

prevent oxidation of the oil

reduce foaming

prevent sludge deposits

D

By using magnetic By using x-ray particle test contamination of large variation in oil being use viscosity with temperature change pour point anti-foaming despersant additive

By applying pressure test small variation in viscosity with temperature change dispersants

By using dye penetrants high quality of oil

A

viscosity index improver

A

corrosion

solar radiation

magnetic field

heat transmission

B

cooling water outlet valve

cooling water inlet valve

lube oil outlet valve

lube oil return flow valve

A

_273°C

_460°C

_32°C

_180°C

A

Sensible heat

Latent heat


Latent heat of vaporization

A


C

247. In a compression type automatic grease cup, the lubricant is forced into the bearing by __________. 248. With reference to a vessel's structural integrity, the most significant characteristic of a cryogenic liquid is its __________. 249. The heat required to change a substance from a solid to a liquid while at its freezing temperature, is known as the latent heat of __________. 250. The heat required to change a substance from a liquid to a gas without experiencing a temperature change, is defined as the latent heat of __________. 251. The portion of a hydraulic hose that determines its overall strength, is the __________. 252. A weight of 1,000 kips is equivalent to __________. 253. The size of flexible hose used in a hydraulic system is indicated by __________.

32

gravity flow

spring force

a pressure gun

a zerk fitting

B

capability of causing brittle fractures

highly corrosive action on mild steel

vapor cloud which reacts violently with saltwater

toxicity at atmospheric pressure

A

fusion

vaporization

condensation

sublimation

A

fusion

vaporization

sublimation

condensation

B

inner tube

braided inner layers)

outer cover

outer armor

B

1,000 pounds

2,000 short tons

2,240 pounds

500 short tons

D

a color code on the armor

the thickness of the tube wall

B

the inside diameter the numerical of the tube designation found on the 'skin' of the hose


254. Latent heat can be defined as the heat which must be added to a substance in order to change it from a __________. 255. A pressure reading of 00.0 psig is theoretically equal to __________. 256. Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water? 257. An organic solid lubricant, such as graphite, is suitable as an oil additive when used in __________. 258. For the various sizes of tubing and wall thickness used in a hydraulic system, the inside diameter can be determined if it is remembered that the inside diameter equals the outside diameter less __________. 259. The greatest difference between absorbent and adsorbent filters is that absorbent filters __________.

solid to liquid

liquid to vapor

solid to vapor

All of the options

D

30.0 inches of vacuum Hydrochloric acid

300 millimeters of water Chlorine

14.7 psia

00.0 psia

C

Sulfuric acid

Zinc chromate

B

machinery bearings subjected to high temperatures the wall thickness

antifriction bearings on general service pumps 1.5 times the wall thickness

bearings subject to line shaft bearings fluctuating loads

A

2 times the wall thickness

C

will remove additives from the lube oil

soak up liquid contaminants directly into the filter media

do not create attract or have B pressure drops in liquid the lube oil system contaminants stick to the surface of the filter media filler to smooth coolant to carry C surface away heat irregularities

260. The graphite in a bearing lubricant low temperature compound of graphite grease, acts sealer as a __________. 33

moisture barrier


2.5 times the wall thickness

261. What would you do after adding grease to a ball bearing with a handheld grease gun?

You should run the machine with the bearing housing drain plug open for a short while

262. In addition to a pressure gauge and a relief valve, an air receiver should be fitted with a __________. 263. The difference between the pressure at a point being measured and that of a perfect vacuum is known as __________. 264. An additive used to improve the ability of a lube oil to reduce friction is known as a/an __________. 265. Which of the units of measurement listed below are used to express positive and negative suction heads when calculating pump head or hydraulic horsepower?

34

You should remove the grease fitting and leave open to allow excess grease to escape

You should save the used grease for chemical analysis

A

sight glass and manhole

You should close the bearing housing drain and add a little extra grease to compensate for air pockets in the bearing thermometer and sight glass

thermometer and manhole

drain connection

D

internal pressure

gauge pressure

absolute pressure

external pressure

C

suppressant additive

dispersant additive extreme pressure additive

PH alkaline additive

C

Inches of mercury for positive head and feet of water for negative head

Feet of water for positive head and inches of mercury for negative head

Feet of water for both positive and negative heads

D


Inches of mercury for both positive and negative heads

266. The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the __________. 267. Which of the additives listed is used to reduce the foaming tendency of lube oil? 268. Which of the following statements is correct concerning the viscosity of lubricating oil?

American viscosity index Petroleum Institute number number

Seconds Staybolt Furol number

Seconds Saybolt Universal number

B

Emulsifiers

Suppressants

Depressants

Extreme pressure

B

Viscosity is a measure of a fluid's internal resistance to flow. Wax content

Viscosity will decrease as temperature decreases. Water content

Viscosity is not dependent on temperature.

B

Acid content

B

internal friction

demulsibility

S.A.E. number

B

One-half of a turn

Three-fourths of a turn

One turn

D

140°F to 160°F

250°F to 300°F

350°F to 450°F

D

Viscosity, acidity, and demulsibility

Pour point, flash point, and precipitation number

Autoignition point, viscosity index, and film strength

B

Viscosity will increase as temperature increases. 269. The pour point of lubricating oils is Extensive affected the most by which of the centrifuging following? 270. The viscosity of an oil is a weight measure of its __________. 271. On vessels using reach rods to One-fourth of a manually control the tank valves, turn one turn of the hand wheel on deck will produce how many turns of the valve stem at the valve? 272. The flash point of most lube oils 80°F to 100°F used in a main lubricating system should be approximately __________. 273. Which of the listed characteristics Ash content, of lube oil are the most important carbon residue, to the engineer from an and gravity operational standpoint? 35


274. A salinity indicating system functions on the basic principle of measuring the __________. 275. Where should an S-type trap and drain properly used?

electrical inductance of water Used for for all lavatory sink installations, as no other drain type is useable

electrical conductivity of water Used whenever the 'gray' water drain system connection is located in the deck

276. The component which is used to thoroughly separate small, fine, dust-like particulate contamination from hydraulic fluid is a/an __________. 277. The sensible heat of air is dependent upon the __________. 278. Which of the following statements describes the relationship between flash point and ignition temperature? 279. When the pressure on a compound gage is released, the gage pointer is returned to zero psig by action of the __________? 280. A lube oil filter can be used to remove most contaminants from lube oil. What is the contaminant which will remain in the lube oil after filtering?

accumulator

filter

dry bulb temperature Both are higher than normal burning temperatures. Bourdon tube

wet bulb temperature The flash point is always higher.

acid

36

hydrogen ion concentration of water Used as a condensate drain for superheaters

B

strainer

B

saturation temperature The ignition temperature is always higher.

water vapor superheat They are not necessarily related.

A

spring return arm

compound diaphragm

compensating spring

A

fuel oil

sediment

water

B


specific gravity of water Used whenever the 'gray' water drain system connection is located in a bulkhead separator

B

C

281. How can the percentage of impurities in a specific fuel oil sample be determined? 282. Which of the following statements describes the actions of an axial piston motor with a full deflection variable position tilting box?

settling in a fuel tank

testing in a laboratory centrifuge Control over Maximum speed speed, direction, when rotated in and stopping the 'hauling in' would be better direction would be than having the obtained with the pump equipped tilting box just prior with the tilting box. to neutral stroke, while 'pay out' would be the opposite. 0.1795 0.2046

283. A ship travels 234.02 nautical miles in 24 hours at an average propeller speed of 60 RPM. If the propeller pitch is 20.07 feet, what is the propeller slip during this passage? 284. What is the equivalent in inches 15/32 inches having a reading of .625 inches? 285. The disc of a relief valve has an 208 psi area of 0.85 square inches when seated, lifts at a set point pressure of 250 psi. When the valve lifts, the area of the disc exposed to pressure increases by 20%. At what pressure does the valve reseat? 37

burning in a calorimeter

testing in a closed cup

Maximum torque, when rotated in the 'pay out' direction would be obtained with the tilting box just prior to neutral stroke, while 'hauling in' would be the opposite. 0.221

Maximum speed in D either direction of rotation would be achieved just beyond of neutral stroke, making reversal of direction difficult.

0.262

A

9/16 inches

5/8 inches

35/64 inches

C

227 psi

231 psi

250 psi

A


B

286. When stopper is inserted into the spout of a closed container in which water has been heated to a temperature of 212°F. If additional thermal energy is imparted, what changes will occur to the pressure and temperature inside the container? 287. Which of the listed values represents the temperature of saturated vapor for water at a pressure of 14.7 psia? 288. The boiling point of water in an open container at sea level is 212°F. What will happen to the boiling point when the pressure on the open container is decreased? 289. Which of the following terms would best describe the temperature at which a liquid boils at a given pressure? 290. A vapor under pressure stays in contact with, and at the same temperature as the liquid from which it was generated. What do you call the vapor and liquid in this situation?

38

both pressure and temperature will rise

pressure alone will temperature alone rise will rise

only a change of state will occur

A

198°F (92°C)

212°F (100°C)

335°F (168°C)

414°F (212°C)

B

increase

decrease

increase and then decrease

decrease and then B increase

Degree of saturation

Saturation temperature

Superheated temperature

Degree of superheat

B

critical state

superheated state

A

equilibrium contact latent contact


291. Which of the following conditions must exist for heat to flow from one object to another?

The two objects must be in physical contact.

The two objects must be the same size.

292. Machinery operating features are designed to help conserve energy. Which of the following results will not contribute to energy conservation? 293. If 1 Horsepower equals 42.45 BTU's per minute, then the energy required to lift a 1 pound (.454 kg) weight, 778 feet (.24 km), against the force of gravity, What would be the number of BTU's required to raise the temperature ? 294. Which of the following statements concerning the operation of a single-acting hydraulic ram is correct?

Reduction of friction.

Insulation of hot surfaces.

295. Which of the following statements concerning energy is correct?

39

There must be an existing temperature differential. Lubrication of moving parts.

There must be an existing weight differential.

C

Elevation of heat exchanger overboard outlet temperatures.

D

1 ounce (28.3 g) of 1 quart (.95 l) of water 1°F (.55°C) water 1°F (.55°C)

1 gallon (3.78 l) of water 1°F (.55°C)

1 pound (.454 kg) of water 1°F (.55°C)

D

Hydraulic force is applied simultaneously in two directions against the ram by directional ports. Energy can be created or destroyed.

The single-acting ram is not retracted by means of hydraulic force.

Hydraulic force C applied to a singleacting ram results in a pulling motion.

The total quantity of energy in the universe is always the same.

None of the stated C options

The single-acting ram is both extended and retracted by means of hydraulic force. Energy may not be transformed.


296. What is the quantity of heat required to raise the temperature of a unit mass of a subtance? 297. Which of the following terms is used to indicate that the addition of heat will result in a temperature change? 298. A machine capable of producing 1650 foot-pounds of work per second is considered to produce how much horsepower?

40

latent heat

sensible heat

specific heat capacity

variable heat

C

Latent heat

Sensible heat

Sublimation heat

Critical point heat

B

1 hp

2 hp

3 hp

4 hp

C


ENGINE REVIEWER

Recommend Documents