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MU Mechanical Engineering (Semester 8)
Renewable Energy Sources
May 2013
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) Calculate the variation at day length OVER A YEAR (on 19th of the each month of year 2012) of The following location and plot the same on graph. & make your comments. Location: Delhi (28 ° 35'N. 77° 42°E)
10 M
1 (b) Write short notes on:
i) Mini & Micro hydel plants
ii) Wind energy site selection
iii) Solar pond
iv) Solar cooker
10 M

2 (a) Derive the expression for maximum power output fraction from wind power
10 M
Explain in details the following.
2 (b) (i) Energy plantation
5 M
2 (b) (ii) Community type of Biogas plant
5 M

3 (a) Explain the various methods of tapping geothermal energy
5 M
3 (b) Explain critical criteria in design of OTEC Plant
5 M
3 (c) Explain with neat sketch any one ocean wave energy conversion device
5 M
3 (d) Compare single basin tidal energy power plants with double basin system.
5 M

4 (a) Specify the energy status of India & Maharashtra at 2012 and write your comment on Role of Non- conventional energy sources in this Scenario.
10 M
4 (b) Explain solar radiation Measurement devices in details
5 M
4 (c) Explain any three modes of tracking of cylindrical parabolic concentrator.
5 M

5 (a) Calculate the average daily global radiation on a horizontal surface in a location at 28° 35 'N if average sunshine hours is 9.5, a= 0.35, b =0.4 on December 1
10 M
5 (b) Explain the various factors in details which affects the generation of Bio-Mass.
6 M
5 (c) Explain about wood pyrolysis
4 M

6 (a) Define & explain the following terms:
i) Latitude ii) Declination iii) surface azimuth angle iv) hour angle v) Day Length
10 M
6 (b) Explain with neat sketch. Wind energy. conversion system
6 M
6 (c) Solar distillators
4 M

7 (a) Differentiate between :
i) Conventional &Non-Conventional energy sources
ii) Commercial &Non Commercial energy sources
iii) Renewable & Non Renewable Energy sources
9 M
7 (b) Detail classification of wind Mills
6 M
7 (c) Describe basic principal of fuel cell. Discuss its advantages & disadvantages, And also explain any one type of fuel cell
5 M

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