Illumination What will be the total flux emitted by a source of 60 candle power? 0.001326 lumens. 60 lumens. 754.2 lumens. None of these. 0.001326 lumens. 60 lumens. 754.2 lumens. None of these. ANSWER DOWNLOAD EXAMIANS APP
Illumination A 1000 W bulb fitted with a reflector illuminates an area of 3 m x 3 m with an average illumination of 450 lux. If the bulb has and efficiency of 9 lumens / watt the efficiency of the reflector is 45 %. 20 %. 30 %. 70 %. 45 %. 20 %. 30 %. 70 %. 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? 5 2 4 6 5 2 4 6 ANSWER DOWNLOAD EXAMIANS APP
Illumination In illumination technology total lumens emitted by source / total lumens available after waste of light is equal to utilization factor. absorption factor. waste light factor. beam factor. utilization factor. absorption factor. waste light factor. beam factor. ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is candela. lux. steradians. lumens. candela. lux. steradians. lumens. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 40 lumens / watt. 70 lumens / watt. 60 lumens / watt. 30 lumens / watt. 40 lumens / watt. 70 lumens / watt. 60 lumens / watt. 30 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP
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