Reg No.: Name:
APJ ABDUL ‏۸0ء‎ 7758۳۹۱۷۶۸۷۳7 UNIVERSITY

Sixth Semester B.Tech Degree Regular and Supplementary Examination July 2021

Course Code: EE366
Course Name: ILLUMINATION TECHNOLOGY

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer all questions, each carries 5 marks. Marks
1 Write short notes on the stroboscopic effect in lighting system. (5)
2 Define the terms a) illumination b) luminous flux c) luminous intensity (5)

d) lumen and e) candle power.
3 A room 8 mx 12 m is illuminated by 26 fluorescent lamps 40 watts each. The (5)
average illumination was found to be 400 lux. Calculate the coefficient of

utilisation. Take efficiency of lamps as 70 lumens per watt.

4 What are the various light arrangement styles in street lighting? (5)
5 Explain the main objectives of flood lighting design. (5)
6 What is beam spread of flood light luminaire? Explain its significance. (5)
7 What are the main features to be considered in monument and statue lighting? (5)
8 Explain the constraints in hospital lighting. (5)
PART 8
Answer any two full questions, each carries 10 marks.
9 a) What are the requirements of a good artificial lighting scheme? (5)

b) Explain the laws of illumination with the help of neat sketches. (5)
10 a) A small light source with intensity uniform in all directions is mounted at a
height of 10 m above a horizontal surface. Two points A and B both lie on the
surface with point A directly beneath the source. How far is 8 from A if the (6)
illumination at B is only 1/10 as great as at A?

b) Explain VCP and UGR in connection with glare rating. (4)

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