GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
Subject Name: Energy Conservation, And Audit
Time: 02:30 PM TO 05:00 PM
Date: 15/11/2018
Total Marks: 70
Subject Code: 2180910
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-VIII (NEW) EXAMINATION — WINTER 2018Subject Name: Energy Conservation, And Audit
Time: 02:30 PM TO 05:00 PM
Date: 15/11/2018
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) Explain objective of energy management. | 03 |
| (b) Explain need of energy audit. | 04 | |
| (c) Explain various instruments used for energy audit and monitoring of energy saving. | 07 | |
| Q.2 | (a) What is harmonics? Give the causes of harmonics. | 03 |
| (b) What are the causes of high transmission and distribution losses? | 04 | |
| (c) Explain ROI, IRR, NPV and pay back period. | 07 | |
| OR | ||
| (c) Why energy conservation act is framed? Explain the words “standard and labeling” and “designated consumers” and “ BEE” with reference to this act. | 07 | |
| Q.3 | (a) Explain impact of renewable energy on energy audit recommendations. | 03 |
| (b) Explain guidelines for writing energy audit reports. | 04 | |
| (c) Explain the concept of co-generation and its'applications. | 07 | |
| OR | ||
| (a) Compare magnetic ballast and electronics ballast. | 03 | |
| (b) How variable frequency drive is useful in energy conservation? | 04 | |
| (c) What are the characteristics of energy efficient motors? Explain in detail. | 07 | |
| Q.4 | (a) Explain scope of energy saving in steam distribution. | 03 |
| (b) Explain the procedure-to save the energy of a lighting system. | 04 | |
| (c) Write short note on demand side management. | 07 | |
| OR | ||
| (a) Explain types of pumps. | 03 | |
| (b) How energy can be saved in cooling tower? | 04 | |
| (c) What is Automatic power factor controller? Explain in detail. | 07 | |
| Q.5 | (a) Discuss the effect of excess air and waste heat utilization of performance of boiler. | 03 |
| (b) Explain various methods of energy conservation in house. | 04 | |
| (c) Explain indirect method of energy efficiency calculation for furnace. | 07 | |
| OR | ||
| (a) Which are the various applications of blowers. | 03 | |
| (b) Explain in detail various methods of Energy Conservation in Compressors. | 04 | |
| (c) Describe various methods of Energy Conservation in Pumps. | 07 | |
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