Mahatma Gandhi University (MGU) 2007 B.Tech Electrical and Electronics Engineering ADVANCED POWER ELECTRONICS SYSTEMS (Elective II) - Question Paper

G 1821 (Pages : 2)
Reg. No…………………..
Name……………………..
B.TECH. DEGREE EXAMINATION, JULY/AUGUST 2007
Eighth Semester
Branch : Electrical and Electronics Engineering
ADVANCED POWER ELECTRONICS SYSTEMS (Elective II) (E)
(New Scheme – 2002 admission onwards)
(Regular/Supplimentary)
Time : 3 Hours Maximum : 100 Marks


ans all ques.
Part A
every ques. carries four marks.
1. discuss the output voltage formula.
2. Briefly discuss C'uk Converter.
3. discuss linear mode power supply.
4. discuss isolated DC topologies.
5. discuss series and parallel resonant converters.
6. Briefly discuss half bridge operation in resonant converters.
7. Distinguish ranging from bipolar PWM and unipolar PWM.
8. explain the disadvantages of SPWM inverter.
9. describe and discuss displacement factor
10. Write short note on boost rectifiers.
(10 x four = 40 Marks)
Part B
every ques. carries 12 marks.
11. Briefly discuss DC-DC converter topologies.
Or
12. discuss full bridge with bipolar and unipolar switching.
13. discuss the principle of operation of SMPS with a neat block diagram.
Or
14. Briefly discuss push-pull topology.
15. explain the principles of zero voltage and zero current switching. (ZVS and ZCS).
Or
16. explain the advantages of resonant converters over PWM converters.
17. explain the principle of sinusoidal PWM. describe modular index.
Or
18. define with block diagram tolerance band control and fixed frequency control.
19. discuss various topologies of UPS.
Or
20. discuss with block schematic electronic ballast.
(5 x 12 = 60 Marks)

Earning:   Approval pending.