A workshop measures 7m x 13m and is lighted by 10 lamps which are rated at 200 W and have an efficiency of 15 lumen per watt. Assuming a depreciation factor of 0.67 and a coefficient of utilization of 0.5, find the illumination on the working plane. a. 102.4 lux b. 112.3 lux c. 123.3 lux d. 110.4 lux
A workshop measures 7m x 13m and is lighted by 10 lamps which are rated at 200 W and have an efficiency of 15 lumen per watt. Assuming a depreciation factor of 0.67 and a coefficient of utilization of 0.5, find the illumination on the working plane. a. 102.4 lux b. 112.3 lux c. 123.3 lux d. 110.4 lux
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A workshop measures 7m x 13m and is lighted by 10 lamps which are rated at 200 W and have an efficiency of 15 lumen per watt. Assuming a depreciation factor of 0.67 and a coefficient of utilization of 0.5, find the illumination on the working plane.
a. 102.4 lux
b. 112.3 lux
c. 123.3 lux
d. 110.4 lux
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