Illumination What will be the total flux emitted by a source of 60 candle power? 60 lumens. 754.2 lumens. 0.001326 lumens. None of these. 60 lumens. 754.2 lumens. 0.001326 lumens. None of these. ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the work of a driver in case of an LED? To convert AC to DC 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 ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficacy of a typical HPSV lamp is in between 70 - 120 lm/watt. 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. ANSWER DOWNLOAD EXAMIANS APP
Illumination The illumination of the surface varies directly with cosine of the angle between normal to surface and direction of the inclined light is given by both A and B. Lambert’s cosine law. None of these law of square inverse. both A and B. Lambert’s cosine law. None of these law of square inverse. 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 Candela/metre square is the unit of which photometric quantity? Luminance Illuminance Luminous Intensity Luminous flux Luminance Illuminance Luminous Intensity Luminous flux ANSWER DOWNLOAD EXAMIANS APP
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