GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
Subject Code: 2182401
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER- VIII (New) EXAMINATION — WINTER 2019
Subject Name: Power Electronics Applications
Time: 02:30 PM TO 05:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q.1 | (a) | Explain merits and demerits of power electronics systems. | 03 |
| (b) | Explain the role of power electronics in Fan Regulator. | 04 | |
| (c) | Write a technical note on: - Battery operated vehicles. | 07 | |
| Q.2 | (a) | Explain the role of power electronics in washing machine. | 03 |
| (b) | Give advantages of HVDC transmission system. | 04 | |
| (c) | Explain application of power electronics in satellite power supplies and aircraft power supplies. | 07 | |
| OR | |||
| (c) | Explain induction heating application of power electronics converter. | 07 | |
| Q.3 | (a) | Explain the Principle of Arc furnaces. | 03 |
| (b) | Explain the static circuit breakers. | 04 | |
| (c) | Explain the functions of Power electronics converter in excavators & cement mills applications. | 07 | |
| OR | |||
| (a) | Draw block diagram of active power filter. | 03 | |
| (b) | What is the electroplating? | 04 | |
| (c) | List various methods of static VAR compensators and explain any one in details. | 07 | |
| Q.4 | (a) | Define basic four types of power processing converters. | 03 |
| (b) | List out the advantages and disadvantages of variable speed drives. | 04 | |
| (c) | Explain the block diagram of electric motor drive. | 07 | |
| OR | |||
| (a) | Compare Regenerative braking and Rheostatic braking mode for chopper drives. | 03 | |
| (b) | Give classification of FACTs controllers. | 04 | |
| (c) | Explain the functions of Power electronics converter in rolling mills and textile mills applications. | 07 | |
| Q.5 | (a) | Draw the block diagram of SMPS. | 03 |
| (b) | Give brief description of wind power plant. | 04 | |
| (c) | Explain the Principle of induction heating. Explain Arc furnace with necessary diagrams. | 07 | |
| OR | |||
| (a) | Give advantages of hybrid vehicle. | 03 | |
| (b) | Explain the reliability of power supply in aerospace systems. | 04 | |
| (c) | Explain speed control of BLDC motor with power electronics converter with necessary diagrams. | 07 |
Date: 27/11/2019
Total Marks: 70
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