GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018
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Subject Code: 2162407 Date: 20/11/2018
Subject Name: Electrical Power Utilization & Traction
Time: 02:30 PM TO 05:00 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) Explain refrigeration cycle with the help of neat diagram. | 03 |
| (b) Draw the electrical circuit of a refrigerator and explain in brief. | 04 | |
| (c) Write a technical note on : Incandescent Lamp. | 07 | |
| Q.2 | (a) Explain Plugging of a DC motor. | 03 |
| (b) List advantages of electric drives. | 04 | |
| (c) Explain the application of flywheel in load equalization with necessary diagram and equations. | 07 | |
| OR | ||
| (c) List and explain factors governing selection of electric motor for a particular service. | 07 | |
| Q.3 | (a) List the properties of resistance heating element. | 03 |
| (b) Explain infrared heating in brief. | 04 | |
| (c) Explain Ajax Wyatt vertical core type induction furnace. | 07 | |
| OR | ||
| (c) List advantages of electric heating. | 07 | |
| Q.4 | (a) Explain direct arc furnace. | 03 |
| (b) Explain Dielectric heating. List its advantages and applications. | 04 | |
| (c) Explain Faraday’s law of Electrodeposition. | 07 | |
| OR | ||
| (c) Explain the factors affecting scheduled speed in traction. | 07 | |
| Q.5 | (a) Explain production of'chemicals by electrolytic process. | 03 |
| (b) List types of Resistance welding. Explain Butt welding in detail. | 04 | |
| (c) Explain speed time curve for main line service. | 07 | |
| OR | ||
| (c) Write a technical note on : Electroplating. | 07 | |
| QS5 | (a) List advantages and disadvantages of welding. | 03 |
| (b) Explain metal arc welding in brief. | 04 | |
| (c) Write a technical note on : Pantograph collector. | 07 | |
| OR | ||
| (c) Draw the block diagram of electric locomotive. | 07 | |
| QS5 | (a) List advantages of electric traction. | 03 |
| (b) Compare DC arc welding and AC arc welding. | 04 |
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