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Alternative Energy Sources (Elective I) (October 2009)

3 pages, 27 questions, 0 questions with responses, 0 total responses,    0    0
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Total No. of Questions : 12] P1409 [Total No. of Pages : 3 [3664]-128 B.E. (Mechanical) ALTERNATIVE ENERGY SOURCES (Elective - I) (402045) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates:1) All questions are compulsory. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) What do you mean by solar constant & air mass ratio? With a diagram mention & define the related angles used in solar geometry. [12] b) Calculate the day length on June 08 2009 for south facing surface tilted at an angle of 30 & located in pune (18 30'N). [4] OR Q2) a) b) Q3) a) b) Discuss the availability of solar energy in India & limitations of solar energy. [8] Distinguish between global & diffuse radiation. Describe the arrangement for measurement of diffuse radiation. [8] Explain the working of conventional liquid flat plate collector with the help of neat sketch. Give the energy balance for the absorber plate & define the instantaneous collection efficiency. Explain briefly the various loss coefficients. [12] Differentiate between active & passive solar heating system. [4] OR P.T.O.

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