Illumination What is the work of a driver in case of an LED? Both ‘a’ and ‘b’ None of these To convert DC to AC To convert AC to DC Both ‘a’ and ‘b’ None of these To convert DC to AC To convert AC to DC ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is lux. candela. lumens. steradians. lux. candela. lumens. steradians. 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 Candela/metre square is the unit of which photometric quantity? Luminous Intensity Luminous flux Illuminance Luminance Luminous Intensity Luminous flux Illuminance Luminance ANSWER DOWNLOAD EXAMIANS APP
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? 6 5 4 2 6 5 4 2 ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? Compact Fluorescent. Incandescent. Metal halide. LED. Compact Fluorescent. Incandescent. Metal halide. LED. ANSWER DOWNLOAD EXAMIANS APP
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