Download GTU B.Tech 2020 Summer 8th Sem 2181910 Renewable Energy Engineering Question Paper

Enrolment No.

GUJARAT TECHNOLOGICAL UNIVERSITY
BE -SEMESTER VIII EXAMINATION- SUMMER 2020

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1

1. State advantages of renewable sources of energy. 03

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2. Explain concept of solar constant and Air mass? 04
3. Write short note on sunshine recorder. 07

Q.2

1. Explain working principle of solar photovoltaic cell (SPV). 03
2. What is biomass? State characteristics of biomass. 04

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3. Explain construction and working of liquid flat plate collectors. 07

OR

1. Explain in detail solar pond with neat sketch 07

Q.3

1. State site selection criteria for wind farm. 03

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2. State difference between pyranometer and pyreheliometer 04
3. State the principle of Ocean Thermal Energy Conversion (OTEC). Describe the working of open cycle OTEC system with schematic diagram. 07

OR

1. Explain swept area, cut in speed and cut out speed for wind mill. 03
2. List and Explain factors affecting to photosynthesis process. 04

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3. Calculate the sun’s altitude and azimuth angle at 9 A.M. solar time on September 1 at latitude 23° N. 07

Q.4

1. Define (1) Declination angle (2) Latitude angle (3) Hour angle 03
2. State difference between aerobic and anaerobic digestion. 04
3. Explain vapour dominated geothermal power plant with neat sketch. 07

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OR

1. A horizontal axis wind turbine is installed at a location having free wind velocity of 18 m/s. the 75 m diameter rotor has three blades attached to the hub. Find the rotational speed of the turbine for optimal energy extraction. 03
2. Give comparison between conventional and solar thermal power plant. 04
3. Explain working of horizontal axis wind generator with schematic diagram. 07

Q.5

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1. What is geothermal energy? Briefly describe the geothermal source of india. 03
2. Give classification of wind mill. 04
3. State comparison between floating gas holder and fixed gas holder type bio gas plant. 07

OR

1. Define (1) Cumulative saving (2) Life cycle saving (3) Annual saving 03

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2. Write short note on clean development mechanism. 04
3. Write in detail about working principal of solar cell also write its advantage and disadvantages. 07