Illumination Total flux or lumens required in any lighting scheme depends inversely on reduction factor. utilization factor. None of these reflection factor. reduction factor. utilization factor. None of these reflection factor. ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is candela. lux. steradians. lumens. candela. lux. steradians. 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 will be the total flux emitted by a source of 60 candle power? None of these. 754.2 lumens. 60 lumens. 0.001326 lumens. None of these. 754.2 lumens. 60 lumens. 0.001326 lumens. 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 5 6 2 4 5 6 2 ANSWER DOWNLOAD EXAMIANS APP
Illumination The solid angle subtended by an area of 2400 cm2 on the surface of a sphere of diameter 1.2 m is 3 / 2. 1 / 3. 2 / 3. 2 / 5. 3 / 2. 1 / 3. 2 / 3. 2 / 5. ANSWER DOWNLOAD EXAMIANS APP