Illumination The work of ballast in a fluorescent tube is to both ‘a’ and ‘b’. None of these. provide a kick start when voltage is induced. limit the flow of current. both ‘a’ and ‘b’. None of these. provide a kick start when voltage is induced. limit the flow of current. ANSWER DOWNLOAD EXAMIANS APP
Illumination Total flux or lumens required in any lighting scheme depends inversely on utilization factor. reflection factor. None of these reduction factor. utilization factor. reflection factor. None of these reduction factor. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamps can be directly connected to a solar cell? Compact Fluorescent Metal Halide LED Incandescent Compact Fluorescent Metal Halide LED Incandescent ANSWER DOWNLOAD EXAMIANS APP
Illumination Wave length for red colour is around 400 nm. 500 nm. 700 nm. 600 nm. 400 nm. 500 nm. 700 nm. 600 nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the work of a driver in case of an LED? None of these Both ‘a’ and ‘b’ 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 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
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