Download GTU BE/B.Tech 2019 Winter 6th Sem Old 162405 Power Processing Circuits I Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 6th Sem Old 162405 Power Processing Circuits I Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? VI (Old) EXAMINATION ? WINTER 2019
Subject Code: 162405 Date: 13/12/2019

Subject Name: Power Processing Circuits - I

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Notations used have usual meaning.

Q.1 (a) Explain working of single phase uncontrolled rectifiers with R-L type of load. 07
(b) Discuss the effect of single phase rectifier on Neutral Currents in 3-Phase supply
system.
07

Q.2 (a) Explain working of three Phase controlled rectifier with resistive load. Also draw
appropriate waveforms.
07
(b) A single phase full bridge controlled converter is feeding energy to resistive load.
Obtain an expression for output voltage and output power in terms of firing angle.
07
OR
(b) Describe Modelling of a controlled rectifier. 07

Q.3 (a) Explain working principle of Buck converter circuit with neat diagram. 07
(b) Write a short note on Multi quadrant chopper circuit. 07
OR
Q.3 (a) Discuss operation of Buck-boost converter circuit with appropriate waveforms. 07
(b) Explain Multiphase chopper circuit with neat sketch and waveforms. 07

Q.4 (a) Write a short note on Forward type DC-DC converter. 07
(b) Explain working of Full bridge type DC-DC converter circuit with waveforms. 07
OR
Q.4 (a) Explain Operating principle of Cuk converter circuit. 07
(b) Write a short note on efficiency of linear regulated power supply. 07

Q.5 (a) Discuss about the working of Load resonant converter with diagram. 07
(b) Write a brief note on ZVS clamped voltage type DC-DC converter. 07
OR

Q.5 (a) Explain basic Concept of ZCS with suitable example of DC-DC converter. 07
(b) Write a short note on Three terminals IC based linear regulators. 07

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