Illumination ___________________________ factor is defined as the ratio of the illumination when everything is clean to illumination under normal working conditions. Absorption factor. Utilization. Maintenance. Depreciation. Absorption factor. Utilization. Maintenance. Depreciation. ANSWER DOWNLOAD EXAMIANS APP
Illumination What will be the total flux emitted by a source of 60 candle power? 60 lumens. 0.001326 lumens. None of these. 754.2 lumens. 60 lumens. 0.001326 lumens. None of these. 754.2 lumens. ANSWER DOWNLOAD EXAMIANS APP
Illumination A 1000 W bulb fitted with a reflector illuminates an area of 3 m x 3 m with an average illumination of 450 lux. If the bulb has and efficiency of 9 lumens / watt the efficiency of the reflector is 45 %. 20 %. 70 %. 30 %. 45 %. 20 %. 70 %. 30 %. ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to both ‘a’ and ‘b’. limit the flow of current. provide a kick start when voltage is induced. None of these. both ‘a’ and ‘b’. limit the flow of current. provide a kick start when voltage is induced. None of these. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? LED Low pressure sodium vapour High pressure sodium vapour Fluorescent LED Low pressure sodium vapour High pressure sodium vapour Fluorescent ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficacy of a typical HPSV lamp is in between 10 - 40 lm/watt 120 - 200 lm/watt. 40 - 70 lm/watt. 70 - 120 lm/watt. 10 - 40 lm/watt 120 - 200 lm/watt. 40 - 70 lm/watt. 70 - 120 lm/watt. ANSWER DOWNLOAD EXAMIANS APP
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