Illumination Total flux or lumens required in any lighting scheme depends inversely on reduction factor. utilization factor. reflection factor. None of these reduction factor. utilization factor. reflection factor. None of these ANSWER DOWNLOAD EXAMIANS APP
Illumination From a uniform light source having luminous intensity of 300 candelas, there exists a plane surface 15 m below. The value of illuminance at a point on the plane surface where the luminous flux rays are inclined at an angle of 30 to the surface is 1.15 lux. 1.53 lux. 17.32 lux. 58.45 Kilolux. 1.15 lux. 1.53 lux. 17.32 lux. 58.45 Kilolux. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 60 lumens / watt. 70 lumens / watt. 40 lumens / watt. 30 lumens / watt. 60 lumens / watt. 70 lumens / watt. 40 lumens / watt. 30 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficacy of a typical HPSV lamp is in between 10 - 40 lm/watt 70 - 120 lm/watt. 40 - 70 lm/watt. 120 - 200 lm/watt. 10 - 40 lm/watt 70 - 120 lm/watt. 40 - 70 lm/watt. 120 - 200 lm/watt. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? Incandescent. Compact Fluorescent. Metal halide. LED. Incandescent. Compact Fluorescent. Metal halide. LED. ANSWER DOWNLOAD EXAMIANS APP
Illumination A 200 candle power lamp is hung 4 m above the centre of circular area of 5 m diameter. The illumination at centre of the area is 12.5 lux. 17.5 lux. 13.5 lux. 18.5 lux. 12.5 lux. 17.5 lux. 13.5 lux. 18.5 lux. ANSWER DOWNLOAD EXAMIANS APP
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