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03000EE366052008

fluorescent lamps. The width of road is 4 m. The lamps are mounted on poles 9
m high. Design a street lighting scheme for obtaining minimum level of
illumination of 0.6 lux. Take luminous flux of fluorescent lamp be 2800 lumens
and CU be 0.5.
List out the special features for staircase and corridor lighting
With neat diagram explain different types of fixtures for interior lighting.
What are the two general principles employed in the design of street lighting
installation?
Estimate the number and wattage of lamps which would be required to
illuminate a workshop space 60 m x 15 m by means of lamps mounted 5 m
above the working plane. The average illumination required is about 100 lux,
coefficient of utilisation 0.4 and luminous efficiency 16 lumens per watt.
Assume the space height ratio of unity and a candle power depreciation of
20%.Also show the layout of luminaires.
What are the main objectives of street lighting?
PART D

Answer any two full questions, each carries 10 marks.
Describe the features of monument lighting.
What are different types of flood lights used for outdoor lighting?
Explain the classification of projectors in flood lighting according to the beam.
Explain design criteria for lighting a cricket stadium.
It is desired to flood the front of a building 80m x 10m. Illumination level
required is 100 lux and the projectors can be placed within 20-60m distance.
Coefficient of utilisation =0.4, waste light factor =1.2, depreciation factor =1.3.
Available lamp specification: Tungsten Halogen 1000Watts, 20 lumen/watt.
Estimate the number and size of circular projectors for the energy efficient and
sustainable scheme. Also find the beam spread.

Explain the features of lighting in different areas in a hospital.

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