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
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? 1:2 2:1 1: 2√2 2√2 : 1 1:2 2:1 1: 2√2 2√2 : 1 ANSWER DOWNLOAD EXAMIANS APP
Illumination Total flux or lumens required in any lighting scheme depends inversely on reduction factor. utilization factor. reflection factor. None of these reduction factor. utilization factor. reflection factor. None of these ANSWER DOWNLOAD EXAMIANS APP
Illumination ___________________________ factor is defined as the ratio of the illumination when everything is clean to illumination under normal working conditions. Maintenance. Absorption factor. Utilization. Depreciation. Maintenance. Absorption factor. Utilization. Depreciation. 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. None of these Lambert’s cosine law. law of square inverse. both A and B. None of these Lambert’s cosine law. law of square inverse. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has the best Colour Rendering Index (CRI)? LED High pressure sodium vapour Incandescent Fluorescent LED High pressure sodium vapour Incandescent Fluorescent ANSWER DOWNLOAD EXAMIANS APP
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