Illumination Luminous efficacy of a typical HPSV lamp is in between 70 - 120 lm/watt. 10 - 40 lm/watt 120 - 200 lm/watt. 40 - 70 lm/watt. 70 - 120 lm/watt. 10 - 40 lm/watt 120 - 200 lm/watt. 40 - 70 lm/watt. ANSWER DOWNLOAD EXAMIANS APP
Illumination The range of visual spectrum is 480nm - 1000nm. 300nm - 760nm. 480nm - 760nm. 300nm - 1000nm. 480nm - 1000nm. 300nm - 760nm. 480nm - 760nm. 300nm - 1000nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the work of a driver in case of an LED? To convert AC to DC To convert DC to AC None of these Both ‘a’ and ‘b’ To convert AC to DC To convert DC to AC None of these Both ‘a’ and ‘b’ ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela/metre square is the unit of which photometric quantity? Luminous flux Luminance Illuminance Luminous Intensity Luminous flux Luminance Illuminance Luminous Intensity ANSWER DOWNLOAD EXAMIANS APP
Illumination Wave length for red colour is around 700 nm. 400 nm. 500 nm. 600 nm. 700 nm. 400 nm. 500 nm. 600 nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination In illumination technology total lumens emitted by source / total lumens available after waste of light is equal to absorption factor. waste light factor. utilization factor. beam factor. absorption factor. waste light factor. utilization factor. beam factor. ANSWER DOWNLOAD EXAMIANS APP
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