Renewable Energy Sources - May 2013
Mechanical Engineering (Semester 8)
TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks. 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 marks) 1 (b) Write short notes on:
i) Mini & Micro hydel plants
ii) Wind energy site selection
iii) Solar pond
iv) Solar cooker(10 marks) 2 (a) Derive the expression for maximum power output fraction from wind power(10 marks)
Explain in details the following.
2 (b) (i) Energy plantation(5 marks)
2 (b) (ii) Community type of Biogas plant(5 marks)
3 (a) Explain the various methods of tapping geothermal energy(5 marks)
3 (b) Explain critical criteria in design of OTEC Plant(5 marks)
3 (c) Explain with neat sketch any one ocean wave energy conversion device(5 marks)
3 (d) Compare single basin tidal energy power plants with double basin system.(5 marks)
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 marks)
4 (b) Explain solar radiation Measurement devices in details(5 marks)
4 (c) Explain any three modes of tracking of cylindrical parabolic concentrator.(5 marks)
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 marks)
5 (b) Explain the various factors in details which affects the generation of Bio-Mass.(6 marks)
5 (c) Explain about wood pyrolysis(4 marks)
6 (a) Define & explain the following terms:
i) Latitude ii) Declination iii) surface azimuth angle iv) hour angle v) Day Length(10 marks) 6 (b) Explain with neat sketch. Wind energy. conversion system(6 marks) 6 (c) Solar distillators(4 marks) 7 (a) Differentiate between :
i) Conventional &Non-Conventional energy sources
ii) Commercial &Non Commercial energy sources
iii) Renewable & Non Renewable Energy sources(9 marks) 7 (b) Detail classification of wind Mills(6 marks) 7 (c) Describe basic principal of fuel cell. Discuss its advantages & disadvantages, And also explain any one type of fuel cell(5 marks)