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Question for Exam in BUET
It is the question paper for Masters Program in civil engineering of BUET. Time Duration was 1 hour for 20 Questions.
This is power electronics lecture compiled by mysterious Tauhid. Never got the chance to go through it. However , it was reported that it produces good results in the lab quiz. Give it a sho…Full description
Recruitment Question of Pashchimanchal Gas Company Ltd. (PGCL) Compiled by: Rony Parvej (IUT, EEE’07) Post: Assistant Engineer (Electrical) Time: unknown Exam Date: 07.01.2011
Full Marks:unknown Venue: BUET
1. Draw the thevenin’s equivalent circuit across the terminal ab.
2. Draw the phasor diagram taking I2 as reference.
3. Draw the block diagram of PLL. Write down its applications. 4. Write down the advantages and limitations of digital communication. 5. Draw the connection diagram of fluorescent lamp and incandescent lamp. 6. Find out VL and PZ for the following circuit.
7. Write down the difference among dc motor, synchronous motor and induction motor. 8. Write down the difference between diode and zener diode. 9. Why transformer is rated in KVA? What are the instrument transformers? 10. A PCM system multiplexes 20 band limited voice channel (300-3400 Hz). 15 of them are multiplexed and uses a 256 level quantizer, considering the standard sampling rate for telephone system what will be the bandwidth of binary encoded signal ?
11. A dc generator having 4 poles , has a shunt field resistance of 100 Ω, armature resistance of 1Ω, 0.02 wb flux per pole and 387 lap wounded coils are connected to a 10Ω load resistor. Determine load power. 12. Write down the advantages and disadvantages of ac transmission. 13. Draw a single line diagram of transmission and distribution system in Bangladesh. 14. Write down the function of relay, fuse and circuit breaker. 15. Write down the conditions of resonance for series and parallel circuit.