Illumination A 200 candle power lamp is hung 4 m above the centre of circular area of 5 m diameter. The illumination at centre of the area is 13.5 lux. 18.5 lux. 17.5 lux. 12.5 lux. 13.5 lux. 18.5 lux. 17.5 lux. 12.5 lux. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamps can be directly connected to a solar cell? LED Incandescent Metal Halide Compact Fluorescent LED Incandescent Metal Halide Compact Fluorescent ANSWER DOWNLOAD EXAMIANS APP
Illumination The illumination at a point 5 meters below a lamp in 6 lux. The candle power of the lamp is 150. 140. 30 200. 150. 140. 30 200. ANSWER DOWNLOAD EXAMIANS APP
Illumination What will be the total flux emitted by a source of 60 candle power? 60 lumens. 754.2 lumens. None of these. 0.001326 lumens. 60 lumens. 754.2 lumens. None of these. 0.001326 lumens. 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? 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
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