GTU BE 2019 Summer Question Papers || Gujarat Technological University
SEMESTER-IV(NEW) - EXAMINATION - SUMMER 2019
Subject Code:2142404 Date:09/05/2019
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Subject Name: Basic Power Systems
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.No. | Question | Marks |
|---|---|---|
| 1 (a) | List the advantages and disadvantages of Nuclear power station. | 03 |
| 1 (b) | Define (1) skin effect (2) string efficiency (3) sag (4) PU system | 04 |
| 1 (c) | Draw and explain schematic arrangement of Thermal power plant. | 07 |
| 2 (a) | What is power factor? Draw and explain power triangle. | 03 |
| 2 (b) | What is Corona effect? Which factor affecting its. | 04 |
| 2 (c) | Explain the disadvantages of low power factor. Explain the calculation of power factor correction with necessary diagram. | 07 |
| OR | ||
| 2 (c) | Define String efficiency. Explain method of improving string efficiency. | 07 |
| 3 (a) | Explain in brief the uses and importance of breaker and fuses in power system. | 03 |
| 3 (b) | Explain performance of single-phase short transmission line. | 04 |
| 3 (c) | Derive the equation of most economical power factor. | 07 |
| OR | ||
| 3 (c) | Explain the Ferranti effect with necessary diagram. | 07 |
| 4 (a) | Discuss Concept of Symmetrical Components. | 03 |
| 4 (b) | Derive the equation of an inductance of a conductor and loop inductance for single-phase two wire line: | 04 |
| 4 (c) | Define the grounding and explain Neutral grounding. | 07 |
| 5 (a) | Explain types of DC links.in brief. | 03 |
| 5 (b) | Enumerate the basi¢ equipment used in HVDC transmission. Explain the operation of converters in HVDC transmission system. | 04 |
| 5 (c) | 07 | |
| OR | ||
| 5 (a) | What is-solid grounding? Enumerate its limitation. | 03 |
| 5 (b) | Discuss requirement and advantages of Neutral Grounding. | 04 |
| 5 (c) | List the advantages of HVDC transmission. | 07 |
| OR | ||
| List the causes of low power factor. | ||
| List the types of insulators used in transmission lines. | ||
| Give the Classification of Sub-station. Explain comparison between indoor and outdoor substation. | ||
| OR | ||
| Draw the key diagram of 11kV/400V sub-station. | ||
| Explain end condenser method for medium transmission line. | ||
| Explain bus bar arrangements in substation. | ||
GUJARAT TECHNOLOGICAL UNIVERSITY
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