Fluid Flow in PVC pipes with various valves. CPUTFull description
Fluid Flow in PVC pipes with various valves. CPUT
Viscous fluid flow chapter 3 notes, Whote
wrw4Full description
Ideal Fluid Flow-engineering
Full description
A very concise book about Gas Dynamics which is a course of Mechanical EngineeringDescripción completa
general topics on chemical engineering
fdgdf
A complete book on compressible flow
fluid flow
sd
fluid flowDescripción completa
Reservoir fundametals flowFull description
Descripción: sd
just for reference
Sabri Ergun, “Fluid flow through packed columns,” Chemical Engineering Progress, vol. 48, pp. 89–94, 1952
1. An ideal fluid is a) one which obeys Newton's law of viscosity viscosity b) frictionless and incompressib incompressible le c) very viscous d) frictionless and compressible 2. The viscosity of a gas a) decreases with increase in temperature b) increases with increase in temperature c) is independent of temperature d) is independent independent of pressure for very high pressure pressure intensities intensities
a) $ N%m2 b) 1" N%m2 c) 12 N%m2 d) 1$ N%m2 $. The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is a) at the centroid of the submerged area b) always above the centroid of the area c) always below the centroid of the the area area d) none of the above !. The total pressure on a plane surface inclined at an angle & with the horiontal is e(ual to a) pA b) pA sin & c) pA cos & d) pA tan & where p is pressure intensity at centroid of area and A is area of plane surface. . *entre of buoyancy always a) coincides with the centre of gravity b) coincides with the the centroid of the volume of of fluid displace displacedd c) remains above the centre of gravity d) remains below the centre of gravity +. ,f the weight of a body immersed in a fluid e-ceeds the buoyant force then the body will a) rise until its weight e(uals the buoyant force b) tend to to move downward and it may finally finally sin c) float float d) none of the above above #. A floating body is said to be in a state of stable e(uilibrium a) when its metacentric height is ero b) when the metacentre metacentre is is above above the centre of gravity gravity c) when the the metacentre metacentre is below the centre centre of gravity d) only when its centre of gravity is below its centre of buoyancy buoyancy &. The point in the immersed body through which the resultant pressure of the li(uid may be taen to act is nown as a) center of gravity b) c en enter of buoyancy c) center of pressure d) metacentre 1". ,f a vessel containing li(uid moves downward with a constant acceleration acceleration e(ual to 'g' then a) the pressure throughout the li(uid mass is atmospheric atmospheric b) there will be vacuum in the li(uid c) the pressure in the li(uid mass is greater than hydrostatic pressure d) none of the above 11. A closed tan containing water is moving in a horiontal direction along a straight line at a constant speed. The tan also contains a steel ball and a bubble of air. ,f the tan is decelerated horiontally then i) the ball will move to the front ii) the bubble bubble will move to the front iii) the ball will move to the rear iv) the bubble will move move to the rear /ind out which of the above statements are correct 0 a) i) and ii) b) i)andiv)
c) ii) and iii) d) iii) and iv) 12. The eddy viscosity for turbulent flow is a) a function of temperature only b) a physical property of the fluid. c) dependent on the flow d) independent of the flow 13. east possible value of correction factor for i) inetic energy is ero ii) inetic energy is 1 iii) momentum is ero iv) momentum is 1 The correct statements are a) i) and iii) b) ii) and iii) c) i) and iv) d) ii) and iv) &# sulphuric acid is pumped at $.! tonne%h 1.2! g%s) through a 2! mm diameter pipe 3" m long to a reservoir 12 m higher than the feed point. 4iscosity of acid 5 2! mN s%m 2 or 2! 2! - 1"63 N s%m2 3 7ensity of acid 5 1#$" g%m a. 223$
b. 2!$!
c. 2#$
a. 1."2 m%s
b. 1.3# m%s
c. 1.!$ m%s
d. 2&! d. N:T;
a. 23" N%m2 b. $!" N%m2 c. 32" N%m2 d. 12! N%m2 1#. The pitot tube is used to measure measure a) velocity at stagnation point b) stagnation pressure c) static pressure d) dynamic pressure 1&.
a. 2.!# >a
b. 2.## >a
c. 3.2! >a
d. 3.$! >a
a. "."2 m%s
b. "."3 m%s
c. "."$ m%s
d. "."! m%s
a. "."3!m
b. "."$! m
c. "."!!m
d. N:T;
a) less than 1 b) between 1 and 1"" c) 1" d) 2"" 2$. ?hen an ideal fluid flows past a sphere a) highest intensity of pressure occurs around the circumference at right angles to flow b) lowest pressure intensity occurs at front stagnation point c) lowest pressure intensity occurs at rear stagnation point d) total drag is ero 2!. ?ith the same cross@sectional area and immersed in same turbulent flow the largest total drag will be on a) a circular disc of plate held normal to flow b) a sphere c) a cylinder d) a streamlined body 2. The is measured by a pieometric opening. A. dynamic pressure B. static pressure *. total pressure 7. point velocity 2+. /or laminar flow in a pipe of circular cross@section the 7arcy's friction factor f is a) directly proportional to 8eynolds number and independent of pipe wall roughness b) directly proportional to pipe wall roughness and independent of 8eynolds number c) inversely proportional to 8eynolds number and independent of pipe wall roughness d) inversely proportional to 8eynolds number and directly proportional to pipe wall roughness
a. 1.! mm b. 2".! mm c. 3!.2 mm d. $1.2 mm 2&. The discharge of a li(uid of inematic viscosity $ cm2%sec through an # cm diameter pipe is 32""n cm%sec. The type of flow e-pected is a) laminar flow b) transition flow c) turbulent flow d) not predictable from the given data 2.2+ m %h water at 32" C is pumped in a $" mm i.d. pipe through a distance of 1!" m in a horiontal direction and then up through a vertical height of 1"m. ,n the pipe there is a control valve for which the friction loss may be taen as e(uivalent to 2"" pipe diameters and also other pipe fittings e(uivalent to " pipe diameters. Also in the line is a heat e-changer across which there is a loss in head of 1.! m of water. ,f the main pipe has a roughness of ".2 mm what power must be supplied to the pump if it is " efficient0 a. "."!
b. ".!
a. 21""" b. 2!"" c. 2#&"" a. 1" m
c. ".""!
d. N:T;
d. 3"#""
b. 11.! m c. 13.2$ m
d. N:T;
a. 13 ? b. 2!+ ? c. 3"? d. N:T; 3$. ,n series@pipe problems a) the head loss is same through each pipe b) the discharge is same through each pipe c) a trial solution is not necessary d) the discharge through each pipe is added to obtain total discharge
3!.
b. 122!"
c. 13!2"
a. ".&&
b. ".#!
c. ".1
a. ! mm b. !$ mm
c. !3 mm
d. 1!2!" d. N:T;
d. !1 mm
a) 32 m b) 2" m c) # m d) $ m $". ?hen the momentum of one fluid is used for moving another fluid such a device is called a%an A. =et pump B. blower *. acid egg 7. none of these $1. Dead developed by a centrifugal pump depends on its A. speed B. impeller diameter *. both a) and b) 7. neither a) nor b) $2. /or a particle settling in water at its terminal settling velocity which of the following is true 0 A. Buoyancy 5 weight E drag B.?eight 5 buoyancy E drag *. 7rag 5 buoyancy E weight 7. 7rag 5 weight $3. Nominal sie of a pipe is an indication of its diameter. A.inner B. outer *. appro-imate 7. none of these
a. 22 c>
b. 23 c>
c. 2$ c>
d. 2! c>
a. 2! c
b. 2# c
d. 3" c
d. 3$ c
A. 1 B. 1"%!! *.!.! 7. 1%!! $+. *hec valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the A. bac flow of fluid in the event of stoppage of pump. B. discharge pressure. *. flow of li(uid during operation of the pump. 7. all a) b) and c). $#. seudo plastic 7. none of these $&. *avitation can be prevented by A. suitably designing the pump. B. maintaining the suction head sufficiently greater than the vapour pressure. *. maintaining suction head 5 developed head. 7. maintaining suction head lower than the vapour pressure. !". /or pipes that must be broen at intervals for maintenance the connector used should be a%an A. union B.tee *. reducer 7. elbow
