Illumination What is the work of a driver in case of an LED? Both ‘a’ and ‘b’ To convert DC to AC To convert AC to DC None of these Both ‘a’ and ‘b’ To convert DC to AC To convert AC to DC None of these ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? Incandescent. Metal halide. LED. Compact Fluorescent. Incandescent. Metal halide. LED. Compact Fluorescent. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which cells in the eye are responsible for scotopic vision? Both ‘a’ and ‘b’ Rod cells None of these Cone cells Both ‘a’ and ‘b’ Rod cells None of these Cone cells 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 Which lamp has a negative Colour Rendering Index (CRI)? Fluorescent Low pressure sodium vapour High pressure sodium vapour LED Fluorescent Low pressure sodium vapour High pressure sodium vapour LED ANSWER DOWNLOAD EXAMIANS APP
Illumination ___________________________ factor is defined as the ratio of the illumination when everything is clean to illumination under normal working conditions. Utilization. Depreciation. Maintenance. Absorption factor. Utilization. Depreciation. Maintenance. Absorption factor. ANSWER DOWNLOAD EXAMIANS APP
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