Illumination Wave length for red colour is around 500 nm. 400 nm. 600 nm. 700 nm. 500 nm. 400 nm. 600 nm. 700 nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 40 lumens / watt. 30 lumens / watt. 70 lumens / watt. 60 lumens / watt. 40 lumens / watt. 30 lumens / watt. 70 lumens / watt. 60 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in lumens. lux. candela. radians. lumens. lux. candela. radians. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? Low pressure sodium vapour High pressure sodium vapour LED Fluorescent Low pressure sodium vapour High pressure sodium vapour LED Fluorescent ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to None of these. limit the flow of current. both ‘a’ and ‘b’. provide a kick start when voltage is induced. None of these. limit the flow of current. both ‘a’ and ‘b’. provide a kick start when voltage is induced. ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is steradians. lux. lumens. candela. steradians. lux. lumens. candela. ANSWER DOWNLOAD EXAMIANS APP
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