Suggestion for EEE ( collected by Md. Parvejul Islam)
Written Questions For written test of PGCB or other companies that is taken by BUET. Circuit: DC circuit solution (Thevn. Maxm.Power,Super posn.,Nodal,Complex circuit etc.) MCQ read from B.L.Theraja (Chapter 1, 2, 3) (1x 4) AC circuit solution (AC fundamentals,V=vSinwt, Polar –rect related prob.) (1x 4) Resonance circuit MCQ read from B.L.Theraja
Electronics: (4x4=16) Clippers, Clampers Circuit (Draw i/p, o/p curve) (1x 4) Characteristics curves (all configurations) DC biasing (Fixed-bias, Emitter-stabilized bias, Voltage-divider bias, DC bias with voltage feedback circuit, try to solve critical configuration and with PNP) (1x 4) Read summary from end of the chapter 2, 3, 4, 5 Op-amp (Inverting, Non-inverting and Summing amplifier) (1x 4) Integrator, Differentiator circuit (draw o/p curves with i/p sine, square waves) Active Filter (draw circuit diagram, Response curve) Draw single & three phases Circuit diagram, input, output curves (Rectifier, Inverter) (1x4) Digital Electronics (Less Impt. for BUET Exam ) Show that a positive-logic NOR gate is the same physical gate as a negative-logic NAND and vice versa Show that a positive-logic AND gate is the same physical gate as a negative-logic OR and vice versa Basic gate implement with NOR and NAND gate
Machine: (2x4=8) Problem on Transformer test, loss and efficiency calculation, Condition for Parallel operation of single-phase & three-phase Transformer Clear concept on V-V connection and Vector Group Instrument transformer Difference between generator and motor Significance of the Back EMF Torque and power relation Why Starter use? Equivalent circuit of an Induction motor Slip and related problem Full-load torque, Maximum torque and starting torque related problem Power stages in an Induction motor and related problem Why starter use in Induction motor? What is synchronizing? Condition for synchronizing of a single and three-phase Alternator V-curve Comparison between Synchronous Motor and Induction Motor
(1x 4)
(1x4)
Communication: (3x4=12) Modulation & Demodulation (definition, input/output waveform, modulation index, equation, and problem) Digital Modulation (input/output waveform, equation) Nyquist Sampling Theorem Bit Error Rate (BER) related problem Define Erlang, One Erlang and related problems OSI reference model and functions Serial & Parallel data transmission General, Power and Communication related Abbreviations
Power System: (2x4=8)
Load curves, Load duration curve/Chronological load curve Definition and concept on connected load, Maximum demand, Demand factor, Average load,Load factor, Diversity factor, Plant capacity factor and Plant use factor also related problem What do you mean by power system? Draw a typical power system one-line diagram Power factor and related problem Why high voltage transmits? Ferranti Effect Skin Effect Corona Effect Relay circuit and its operation Difference between Switch & CB What are the Faults in a power system? Various types of sub-stations, Transmission line rating and generating Voltage in Bangladesh Concept on Grounding, Load Shedding and Load Management Advantages of Interconnections Concept on SCADA and draw it’s Diagram Concept on Renewable energy The One-line diagram, Reactance diagram and Impedance Diagram Importance of Load flow study, related problem What information obtained from Load-flow study? What are Sequence Impedance and Sequence Network? Draw Reactance and Zero-sequence diagram from one-line diagram
General Suggestion For Different Companies DPDC (BUET): *ADSL, CDMA, SONET, QPSK,GPRS,ESCAP, PGCB,DESCO,UNESCO,
Beside which river the 1st Burg Mounted Power Situated (Bhairab River Khulna) 06(six) nos of General Math. 1*6=6 08(Eight) General Knowledge 1/2*8=4 04(Four) Subject related fill in the blanks 1/2*4=2 04 (General Knowledge Elaboration) 1*4=4 06 (Six) English Objective 1*4=4 Maximum Power Transfer Problem (B.L.Thereja-139) 1*6=6 01(one) Ckt breaker problem. 1*6=6 Circuit Breaker Selection/Rating (Stevenson Jr.) 1*6=6 Problem on alternator speed/Slip 1*4=4 Chronological & Load Duration Curve 1*10=10 Problem on Demand factor & Diversity Factor 1*6=6 Problem on Digital Circuit (Resolution) (writer Tossi) 1*6=6 Problem on two wattmeter measurement system 1*6=6 Wave Shape of clipping ckt 1*6=6 Excitation system of synchronous Motor 1*6=6 PGCB (BUET):
General Math Translation (Bangla to Eng.) Elaboration (General Knowledge) Retranslation (English to Bangla) General Knowledge (Multiple Choice) Problem of Thevenin’s Theorem (B.L. Thereja) Problem on Voltage Divider Transistor Amplifier (V.K.Mehta) From Series-Parallel Circuit find Voltage across Resistor Problem on Long shunt DC Compound Generator Problem on DC Generator (May be Power Stage) Problem on short circuit test of transformer Objective (KVAR, Insulator, Alternator, Power of Star to Delta)
(Chapter end objective of B.L.Thereja).
True-False (FET, SCR, TRIAC) What is LVDT, Transducer Problem on Modulation Problem on Optical Fiber Clipping Circuit Op-Amp Design [Like : 2V1+∫V2dx+d/dx(V1+5V3)] Equivalent Circuit of 3-Ø Induction motor Power stage of Alternator One problem on control System.
10*0.5=5 6*0.5=3 6*1=6 6*1=6 10*0.5=5 1*6=6 1*10=10 1*6=6 1*10=10
BAPEX (BUET):
General Math 10*0.5=5 Translation (Bangla to Eng.) 6*0.5=3 Elaboration (General Knowledge) 6*1=6 Retranslation (English to Bangla) 6*1=6 General Knowledge (Multiple Choice) 10*0.5=5 Problem of Nodal Theorem (B.L.Thereja) 1*6=6 From Series-Parallel Circuit find Voltage across Resistor 1*6=6 Problem on DC Generator 1*10=10 Problem on DC Motor (May be Power Stage) Problem on short & open circuit combined test of transformer Objective (Chapter end objective of B.L.Thereja). True-False Problem on Modulation Problem on Optical Fiber Clipping Circuit Op-Amp Design [ Summing/Adder, Integrated output of three input Op-Amp] Equivalent Circuit of 1-Ø Induction motor Power stage of Synchronous motor. Er = SE2 Induction Motor Problem. Sylhet Gas Field (BUET):
General Math Correct Sentence General Knowledge (Multiple Choice) Elaboration (BCMCL, NAFF,BGFCL, BPC) Write the Company name [Total Gas(British) , Cairn Energy (France), Shevron USA, NIKO (Canadian)]
What do mean by Dyn11 (Primary Delta, Secondary Star with Neutral & 600 Phase shift.) Commercial Radio Frequency Range (87.5~108.0 MHz) By Nodal analysis find Current ‘I’ (A diagram of a circuit is supposed to be here.) Problem on Maximum Power Transfer For three sources. Design the Op-Amp output for 3V1+V2 Clipping Circuit. Abbreviations: OFDM, GSM, VSAT, PABX, ATM, SONET For a 230/460 V, 46000VA Transformer to maintain 400 volt at Secondary find the Primary Terminal Voltage. A Generator of 30MVA, 13.2KV, 20% Reactance supplied to a motor of 12.8 KV, 20% Reactance by a trans former of 10% reactance. If fault occur to the motor side. Find fault current. In case of two Wattmeter power measuring method W1=4000, W2=-1000. find Power factor Cosθ=?, Power=? Draw Torque speed curve of Synchronous motor and three phase Induction motor. Draw the circuit diagram & Output shape of two value capacitor single phase induction motor.
EGCB (DUET):
Power Factor, causes & Consequence. What is Bus Bar & draw different type of arrangement? What is Developing Planning. Electricity crisis of Bangladesh. What is Plant Capacity Factor. How Diversity factor reduce the cost of Generation. What do you mean by gas turbine power plant, write its four Disadvantages. Write the Site Selection of steam turbine power plant. Write the selection of number of Generating Unit. Advantage of High Voltage Transmission. Source of Energy. Possibilities of power generation of Renewable energy. Load factor, Diversity factor. DPDB (BUET):
General Math Translation (Bangla to Eng.) Elaboration (General Knowledge) General Knowledge (Multiple Choice) Problem of Maximum Power transfer in case of DC circuit (B.L.Thereja) Nodal Analysis with current & Voltage source mix. Objective (Chapter end objective of B.L.Thereja). True-False Clipping Circuit Erlang (E) Problem on Traffic signal of GSM system (Ref: GSM by Ericsion) Traffic per node =10/20=0.5E No of call per server = 30/3=10 No of call by group server = 10*20=200 callls. Show that Serial data transfer required less memory than parallel data transfer at counter to counter. For a 230/460 V, 46000VA Transformer to maintain 400 volt at Secondary find the Primary Terminal Voltage (Unknown). A Generator of 30MVA, 13.2KV, 20% Reactance supplied to a motor of 12.8 KV, 20% Reactance by a trans former of 10% reactance. If fault occur to the motor side. Find fault current. (Stevenson Jr. 257 page). Draw the Zero sequence network of the given circuit. (Example Stevenson Jr.) Draw the Torque speed curve of Induction Motor at Variable Resistance. In case of two Wattmeter power measuring method W1=4000, W2=-1000. find Power factor Cosθ=?, Power=?
PGCB some old question: http://xa.yimg.com/kq/groups/14569883/714256576/name/PDB http://xa.yimg.com/kq/groups/14569883/2041305556/name/PDB Marks Distribution Total Marks: 100 /80 1. English: 10/15 Translations Correction of Sentences Phrase Idioms Small Paragraph etc.
Time: 1:30 /1:00 Hours
2. General Knowledge: 10/15 Current Affairs (Games, Awarded, Ministry, Electricity, Novel Prize etc) 3. Math (Like EMBA of DU): 10/15 4. Department: 50/60 Very Short Quest. / MCQ: 10/15 Medium Quest. / Mathematical: 35/40
VIVA QUESTIONS & ANSWER ON PGCB: 1. Faults in power system Ans: Symmetrical & Unsymmetrical faults connection diagram. 2. Protections of Transformer & Alternator. Ans: Txr-Differential protection, Buchholz relay, Earth fault etc with connection diagram Alt- Sensitive earth fault, Stator & rotor winding fault protection, stator reverse power Protection, over& under voltage & frequency protection. Over load protection. 3. What is sequence components & network? Ans: Positive, negative & Zero sequence. 4. What is subsequent fault? Ans: If one fault occurs by other fault which is already occurred. 5. What is unit Protection. BPDB: 1. 2. 3. 4. 5. 6.
Explain about myself, University, year of passing. What is combined cycle & how it increase efficiency About my Plant. Generation, Total load, Supply Voltage, Connection of PFI unit. What is G8 & Name of its one members Pythagoras Theorem for Triangle. Writer of Meghnathbod Kabbo (Michel Madhusudhan Datta).
Tallow Oil Company Limited (Vangura gas Field): 1. Explained about myself 2. What are present in my company. 3. My Companies control system. 4. Electricity Generation System. 5. Protection of Alt. Steam Boiler, Control Valve, Magnetic Flow meter, Gas Flow meter, 6. Safety of Boiler (Fuse able Glass), How can I get Superheated Steam. 7. Personal Protection Equipment: Safety shoe, safety goggles, Gas mask, Safety Jackets. 8. What is the check point of an induction motor before run or after stop. 9. Operation Sequence of a steam boiler. EGCB: 1. Explain about myself, 2. What is steam turbine and its principle. 3. What is Calorific Value of a fuel. 4. What is its unit (Ans: BTU, KCal, joule) 5. Different types of protection of Alt. & Transformer. 6. What is in X-former tank (Ans: Core, Oil, Winding) 7. What is the work of X-former oil (Ans: Insulator, Minimize arc, cooling agent) 8. What is the unit of oil Dielectric strength (KV/cm) 9. What is world wide generation AC voltage (Ans: 11KV) 10. Which is the biggest power station of Bangladesh (Ghorashal , 950 MW) 11. Total Installed capacity of Bangladesh (Asn: 5245MW) 12. Which is the major fuel for generation (Gas) 13. Parallel Operation of 3 Phase x-former. 14. Name Plate on a X-former (%Z, Turn Ratio, KVA, Current rating, Origin of manufacture, Dielectric strength of oil, Frequency etc.
Telecom Syllabus for Job seekers First of all, prepare yourself for IBA type of exams which include verbal, analytical and mathematical problems. And the technical topics for Telekom jobs are given below. But, don’t get lost in exploring the topics in depth. Just basics and initial understanding will do your purpose.First step is to look confident and bring a humble kind of attitude in appearance !!!!!! Prepare a good summary of your final year thesis, you can exaggerate your work with cleverly approach as most of the interviewers is not gonna understand you.
Topics: 1. GSM,CDMA,WCDMA,LTE infrastructure – very good knowledge about different part of GSM system 2. .Evolution of GSM/CDMA- 1G, 2G, 3G, GPRS, EDGE, WIMAX, CDMA2000-1x, CDMA2000-EVDO ( their data rates, services ) 3. Call set up procedure 4. Specifications like freq range, BW, data rate etc of GSM 900,1800, 800,1900 and CDMA 5. Basic Idea of GSM, CDMA and LTE 6. Difference between GSM and CDMA 7. Difference between circuit switching and packet switching 8. Hand off techniques- GSM/CDMA both 9. Know these terms (just what are they?) PN code, Walsh code, Q-factor, BER, Interference 10. Cellular concept – fading, channel re-use, sectoringsort of basic ideasTransmission media ( Microwave and fibre optics basic idea) 11. The names of various modulation methods like PCM, PSK, GPSK, QPSK,WDM etc ( just basic idea and what modulation technique is used in which technology) inband signaliing, outband signaling,
SS7 basics (SsP, SCP, STP) & the layer structure of SS7( MTP, SCP, OMAP.....etc)
OSI layers, IPV4 ( musking, subnetting)
Get some basic ideas about E1/T1, VSWR, PDH, SDH links,IPV6, Earlang, NGN, WIMAX, IN, Your 4th year thesis, DSL/ADSL/SDSL, ATM, Multiplexing, MSI
12. antenna ( names of different antenna), Antenna gain, Beam efficiency, Directivity, Solid angle, 3db, Eb/No Ans these questions
What voltage is needed for BSS equipments? –48v/+24v (dc) in telecom equipment, do we use DC power supply anywhere?-yes basic ckt diagrams, BJT, MOSFET, DIODE, BIASING DLD GATES (and, or, nor etc) Actually anyone going for an interview in computer/ IT based jobs (OSS, IN, VAS etc) then he needs some more things to learn like SQL commands – important SQL commands from IVAN BAYROS Oracle Basics Sun-solaris 9.0 fundamentals and intermediates
try to cover some important networking based commands according to your own judgment
BOOKS NEEDED:
1.GSM System Survey- Ericssion 2.Forozan 3.Lynn
WIKIPEDIA & GOOGLE are your best teacher in this moment.(most of the cases, just basic knowledge of everything is enough to satisfy employers) *I received these info from my seniors
ABBREVIATIONS General: 1. OPEC--Organization of the Petroleum Exporting Countries 2. APEC--Asia-Pacific Economic Cooperation 3. NIPSOM--The National Institute of Preventive and Social Medicine 4. HBFC--HOUSE BUILDING FINANCE CORPORATION 5. ESCAP--Economic and Social Commission for Asia and the Pacific 6. BIMSTEC--Bay of Bengal Initiative for Multi Sectoral Technical and Economic Cooperation 7. ETC--European Travel Commission 8. PAMA--The Professional Aviation Maintenance Association 9. DAMA--the Data Management Association 10. ISBN--The International Standard Book Number 11. T&T--Trinidad and Tobago 12. NHRC- National Human Rights Commission 13. UNESCO- United Nations Educational, Scientific & Cultural Organisation 14. IME- Institute Of Marine Engineers 15. BREB- Bangladesh Rural Electrification Board 16. BTMC- Bangladesh Textile Mills Corporation 17. ICAB- Institute Of Chartered Accountants of Bangladesh 18. BJIT Limited - Bangladesh Japan Information Technology 19. TIFA = Tax Increment Financing Authority 20. BPATC- Bangladesh Public Administration Training Centre 21. SPARRSO-Space Research and Remote Sensing Organization (Bangladesh) 22. IFAD--The International Fund for Agricultural Development 23. IUCN--the International Union for Conservation of Nature 24. Swine Flue Virus (H1N1) Comes From Pig/Swine
Engineering: 1. GPS--Global Positioning System 2. QPSK-- Quadrature phase-shift keying 3. GPRS--General Packet Radio Service 4. CTBT--The Comprehensive Test Ban Treaty 5. STM--Scanning tunneling microscope 6. SONET--Synchronous optical networking 7. VSAT--Very Small Aperture Terminal 8. VSWR--voltage standing wave ratio 9. ATM--Asynchronous Transfer Mode 10. ATM--automated teller machine 11. PABX--Private Automatic Branch Exchange 12. AMTOB--Association of Mobile Telecom Operations in Bangladesh 13. ADSL--Asymmetric Digital Subscriber Line 14. CDMA--Code division multiple access 15. DVD--Digital Versatile/Video Disc 16. DVDR--Digital Versatile/Video Disc Recordable 17. SCPC--Single channel per carrier 18. NMS--Network Management System 19. TDMA--Time division multiple access 20. FTDMA--Frequency-Time Division Multiple Access 21. DNS--Domain Name System 22. PSTN--Public switched telephone network 23. TCP/IP--The Transmission Control Protocol/Internet Protocol 24. USB--Universal Serial Bus 25. OMR & OCR-- Optical Mark Recognition & Optical Character Recognition 26. ICR--Intelligent Character Recognition 27. SCADA -- Supervisory Control And Data Acquisition 28. Radar-- Radio Detection & Ranging 29. RDF -- Radio Direction Finder 30. VSAT-- Very Small Aperture Terminal 31. ISD--International Subscriber Dialing 32. ISDN--International Subscriber Dialing Network 33. OFDM- Orthogonal Frequency Division Multiple Access 34. GSM- Global System for Mobile Communication
