Illumination What is the work of a driver in case of an LED? 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 Both ‘a’ and ‘b’ None of these ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela/metre square is the unit of which photometric quantity? Illuminance Luminance Luminous flux Luminous Intensity Illuminance Luminance Luminous flux Luminous Intensity ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp is best suited for lighting an International sports arena? LED Metal Halide Incandescent Compact Fluorescent LED Metal Halide Incandescent Compact Fluorescent ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficacy of a typical HPSV lamp is in between 40 - 70 lm/watt. 10 - 40 lm/watt 70 - 120 lm/watt. 120 - 200 lm/watt. 40 - 70 lm/watt. 10 - 40 lm/watt 70 - 120 lm/watt. 120 - 200 lm/watt. 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? 4 2 5 6 4 2 5 6 ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? LED. Metal halide. Incandescent. Compact Fluorescent. LED. Metal halide. Incandescent. Compact Fluorescent. ANSWER DOWNLOAD EXAMIANS APP
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