Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 7th Sem Old 170906 Advanced Power Electronics I Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VII (OLD) EXAMINATION ? WINTER 2018
Subject Code: 170906 Date: 15/11/2018
Subject Name: Advanced Power Electronics - I
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Explain operation of 12-pulse converter with circuit diagram and input-output
voltage waveforms.
07
(b) Using single pole multiple throw switch, discuss operation of multilevel inverter. 07
Q.2 (a) Compare: Multipulse converter and Multilevel inverter 07
(b) Explain fly back converter topology with diagram and wave forms. 07
OR
(b) Discuss push pull converter and its application in dc power supply. 07
Q.3 (a) With neat circuit diagram and waveform discuss class E resonant inverter. 07
(b) Discuss operation of diode clamped multilevel inverter. Discuss its merits and
limitations.
07
OR
Q.3 (a) Draw block diagram of UPS and discuss each block in detailed. 07
(b) Explain operation of flying capacitor multilevel inverter. 07
Q.4 (a) Discuss operation of Cascaded multilevel inverter. 07
(b) Discuss ZVS converter with necessary circuit diagram and waveforms 07
OR
Q.4 (a) Explain ?-Z1 transformer connection used for multipulse converter. 07
(b) Give analysis of basic series load resonance converter with necessary circuit
diagram and waveforms.
07
Q.5 (a) Compare: ZVS and ZCS. 07
(b) Discuss working and operation of Brushless dc motor 07
OR
Q.5 (a) Discuss Full bridge dc-dc converter with necessary diagram and waveforms. 07
(b) Write a short note on Variable reluctance Stepper Motor. 07
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This post was last modified on 20 February 2020