Illumination Which cells in the eye are responsible for scotopic vision? None of these Both ‘a’ and ‘b’ Cone cells Rod cells None of these Both ‘a’ and ‘b’ Cone cells Rod cells ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? Fluorescent High pressure sodium vapour Low pressure sodium vapour LED Fluorescent High pressure sodium vapour Low pressure sodium vapour LED ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? Compact Fluorescent. Metal halide. LED. Incandescent. Compact Fluorescent. Metal halide. LED. Incandescent. ANSWER DOWNLOAD EXAMIANS APP
Illumination A 1000 W bulb fitted with a reflector illuminates an area of 3 m x 3 m with an average illumination of 450 lux. If the bulb has and efficiency of 9 lumens / watt the efficiency of the reflector is 70 %. 45 %. 20 %. 30 %. 70 %. 45 %. 20 %. 30 %. ANSWER DOWNLOAD EXAMIANS APP
Illumination ___________________________ factor is defined as the ratio of the illumination when everything is clean to illumination under normal working conditions. Depreciation. Absorption factor. Maintenance. Utilization. Depreciation. Absorption factor. Maintenance. Utilization. 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√2 : 1 2:1 1: 2√2 1:2 2√2 : 1 2:1 1: 2√2 ANSWER DOWNLOAD EXAMIANS APP
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