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 law of square inverse. 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 ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the ratio of illuminance at a point 5m just below a lamp emitting 100 candelas and at a point 5m away from the first point on the same horizontal plane? 2:1 1:2 2√2 : 1 1: 2√2 2:1 1:2 2√2 : 1 1: 2√2 ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? LED Low pressure sodium vapour High pressure sodium vapour Fluorescent LED Low pressure sodium vapour High pressure sodium vapour Fluorescent ANSWER DOWNLOAD EXAMIANS APP
Illumination Total flux or lumens required in any lighting scheme depends inversely on reduction factor. reflection factor. utilization factor. None of these reduction factor. reflection factor. utilization factor. None of these ANSWER DOWNLOAD EXAMIANS APP
Illumination What will be the total flux emitted by a source of 60 candle power? 754.2 lumens. 0.001326 lumens. None of these. 60 lumens. 754.2 lumens. 0.001326 lumens. None of these. 60 lumens. ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in radians. lux. lumens. candela. radians. lux. lumens. candela. ANSWER DOWNLOAD EXAMIANS APP
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