Illumination Luminous efficiency of a fluorescence lamp is 40 lumens / watt. 70 lumens / watt. 60 lumens / watt. 30 lumens / watt. 40 lumens / watt. 70 lumens / watt. 60 lumens / watt. 30 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP
Illumination Total flux or lumens required in any lighting scheme depends inversely on reflection factor. None of these reduction factor. utilization factor. reflection factor. None of these reduction factor. utilization factor. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? High pressure sodium vapour Low pressure sodium vapour LED Fluorescent High pressure sodium vapour Low pressure sodium vapour LED 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 The work of ballast in a fluorescent tube is to both ‘a’ and ‘b’. None of these. limit the flow of current. provide a kick start when voltage is induced. both ‘a’ and ‘b’. None of these. limit the flow of current. provide a kick start when voltage is induced. ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela/metre square is the unit of which photometric quantity? Luminous flux Luminance Illuminance Luminous Intensity Luminous flux Luminance Illuminance Luminous Intensity ANSWER DOWNLOAD EXAMIANS APP
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