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2003 Course Illumination Engineering (Elective I)

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Total No. of Questions : 12] P1362 [Total No. of Pages : 3 [3864]-227 B.E. (Electrical) ILLUMINATION ENGINEERING (2003 Course) (403143) (Elective - I) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) Answer three questions from Section - I and three questions from section - II. Neat diagrams must be drawn wherever necessary. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. 4) SECTION - I Q1) a) Explain the properties of light. [6] b) Deduce the relation to find the illumination at any point on the plane surface due to light source suspended at a height h meters from the plane surface. [6] c) State and explain the laws of illumination. [6] OR Q2) a) Enlist various effects of bad lighting. Explain methods of controlling natural light. [6] b) Explain the following : [6] i) Illumination ii) Reflection factor iii) Luminous intensity iv) M.H.C.P. c) What is stroboscopic effect? How it can be avoided. Q3) a) Enlist advantages of gas discharge lamp over incandescent lamp. b) Write short note on L. E.D. s. [6] [6] [4] c) Describe the construction and working of Mercury vapour lamp with sketch. [6] OR Q4) Explain any two with sketch : i) Compact fluorescent Lamp (C.F.L.) iii) Metal Halide lamp [16] ii) LASERS iv) Sox lamp P.T.O.

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