Illumination Which among the following lamps has the maximum burning hours? Incandescent. Compact Fluorescent. Metal halide. LED. Incandescent. Compact Fluorescent. Metal halide. LED. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? LED Low pressure sodium vapour Fluorescent High pressure sodium vapour LED Low pressure sodium vapour Fluorescent High pressure sodium vapour ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela/metre square is the unit of which photometric quantity? Luminous Intensity Illuminance Luminance Luminous flux Luminous Intensity Illuminance Luminance Luminous flux 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 None of these both A and B. law of square inverse. Lambert’s cosine law. None of these both A and B. law of square inverse. Lambert’s cosine law. ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to 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. None of these. limit the flow of current. both ‘a’ and ‘b’. ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in radians. lumens. lux. candela. radians. lumens. lux. candela. ANSWER DOWNLOAD EXAMIANS APP
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