GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (Old) EXAMINATION — WINTER 2019
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Subject Code: 172403 Date: 28/11/2019
Subject Name: Power Processing Circuits - IT
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) List and explain the performance parameters of inverter. [07]
(b) Explain principle of operation of inverter. Classify them and give applications [07]
Q.2 (a) Explain the working of full bridge inverter with neat diagram and waveforms. [07]
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(b) What is Multi Level Inverter? Explain their need briefly. Give applications. [07]
OR
(b) Explain the working of Flying Capacitor Multi Level Inverter (FC-MLI) [07]
Q.3 (a) Explain 120° conduction mode operation of inverter. [07]
(b) Explain the difference between square wave and quasi square wave operation of inverter. [07]
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OR
Q.3 (a) Explain 180° conduction mode operation of inverter. [07]
(b) What do you mean by resonant converters? Explain ZVS resonant inverter. [07]
Q.4 (a) Explain input side control techniques of inverter. [07]
(b) List different types of PWM techniques for control of inverter. Explain any one. [07]
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OR
Q.4 (a) Explain output side control techniques of inverter. [07]
(b) Explain the concept of Triplen Harmonic Injection with its advantages. [07]
Q.5 (a) Classify AC voltage controllers. List and explain its performance parameters. [07]
(b) State the advantages and applications of Active Front End Rectifiers. [07]
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OR
Q.5 (a) Explain Integral Cycle Control of AC-Ac controllers. [07]
(b) List different types of batteries. Explain in brief their methods of charging. [07]
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