Illumination What is the work of a driver in case of an LED? To convert DC to AC Both ‘a’ and ‘b’ None of these To convert AC to DC To convert DC to AC Both ‘a’ and ‘b’ None of these To convert AC to DC ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? Compact Fluorescent. LED. Metal halide. Incandescent. Compact Fluorescent. LED. Metal halide. Incandescent. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? Fluorescent LED High pressure sodium vapour Low pressure sodium vapour Fluorescent LED High pressure sodium vapour Low pressure sodium vapour 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 The range of visual spectrum is 480nm - 760nm. 300nm - 1000nm. 300nm - 760nm. 480nm - 1000nm. 480nm - 760nm. 300nm - 1000nm. 300nm - 760nm. 480nm - 1000nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 70 lumens / watt. 40 lumens / watt. 30 lumens / watt. 60 lumens / watt. 70 lumens / watt. 40 lumens / watt. 30 lumens / watt. 60 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP
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