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 30 %. 20 %. 45 %. 70 %. 30 %. 20 %. 45 %. 70 %. ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is candela. lux. lumens. steradians. candela. lux. lumens. steradians. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? Low pressure sodium vapour LED High pressure sodium vapour Fluorescent Low pressure sodium vapour LED High pressure sodium vapour Fluorescent ANSWER DOWNLOAD EXAMIANS APP
Illumination Wave length for red colour is around 600 nm. 700 nm. 500 nm. 400 nm. 600 nm. 700 nm. 500 nm. 400 nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination What will be the total flux emitted by a source of 60 candle power? 754.2 lumens. 0.001326 lumens. 60 lumens. None of these. 754.2 lumens. 0.001326 lumens. 60 lumens. None of these. ANSWER DOWNLOAD EXAMIANS APP
Illumination ___________________________ factor is defined as the ratio of the illumination when everything is clean to illumination under normal working conditions. Utilization. Absorption factor. Maintenance. Depreciation. Utilization. Absorption factor. Maintenance. Depreciation. ANSWER DOWNLOAD EXAMIANS APP
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