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? 4 5 6 2 4 5 6 2 ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the work of a driver in case of an LED? Both ‘a’ and ‘b’ None of these To convert AC to DC To convert DC to AC Both ‘a’ and ‘b’ None of these To convert AC to DC To convert DC to AC ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamps can be directly connected to a solar cell? Incandescent Compact Fluorescent LED Metal Halide Incandescent Compact Fluorescent LED Metal Halide ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has the best Colour Rendering Index (CRI)? Fluorescent High pressure sodium vapour Incandescent LED Fluorescent High pressure sodium vapour Incandescent LED ANSWER DOWNLOAD EXAMIANS APP
Illumination The range of visual spectrum is 300nm - 1000nm. 480nm - 1000nm. 480nm - 760nm. 300nm - 760nm. 300nm - 1000nm. 480nm - 1000nm. 480nm - 760nm. 300nm - 760nm. 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. Maintenance. Depreciation. Absorption factor. Utilization. Maintenance. Depreciation. Absorption factor. ANSWER DOWNLOAD EXAMIANS APP
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