Illumination Which lamp has a negative Colour Rendering Index (CRI)? High pressure sodium vapour Fluorescent Low pressure sodium vapour LED High pressure sodium vapour Fluorescent Low pressure sodium vapour LED ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in lumens. candela. radians. lux. lumens. candela. radians. lux. ANSWER DOWNLOAD EXAMIANS APP
Illumination What will be the number of lamps, each having 300 lumens, required to obtain an average illuminance of 50 lux on a 4m × 3m rectangular room? 6 5 4 2 6 5 4 2 ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is lux. lumens. candela. steradians. lux. lumens. candela. steradians. 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. law of square inverse. Lambert’s cosine law. None of these both A and B. law of square inverse. Lambert’s cosine law. None of these ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? Compact Fluorescent. Incandescent. LED. Metal halide. Compact Fluorescent. Incandescent. LED. Metal halide. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS