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Alternate Energy Sources (Elective I) (October 2010)

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Total No. of Questions :12] P1516 [Total No. of Pages :3 [3864]-137 B.E. (Mechanical) ALTERNATE ENERGY SOURCES (Elective - I) (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) Answer three questions from each section. Answers to the two sections must be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of logarithmic tables, slide rule, Mollier charts electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) b) Q2) a) Presently more use of non conventional sources of energy is preferred and advised. Why? Discuss its merits and demerits in detail. [10] What is solar constant? Intensity of solar energy received on earth surface is much less than the intensity with which it is beamed from surface of sun. Discuss various possible factors responsible for same. [8] OR Define following terms with neat sketch. i) Zenith angle ii) Solar azimuth angle iii) Surface azimuth angle iv)The hour angle v) Declination. [10] b) Determine the local solar time and declination at a location 23o 15 N, longitude 77o 30 E at 12.30 IST on June 19. Equation of time correction is given from standard chart is (-1 01 ) Indian standard time [8] is based on 82. 50oE. Q3) a) What is insulation? Discuss working of following instructions with neat sketches. i) Pyrometer ii) Pyrheliometer iii) Sunshine meter. [10] P.T.O.

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Additional Info : 2003 Course
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