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 6 5 2 4 6 5 2 ANSWER DOWNLOAD EXAMIANS APP
Illumination From a uniform light source having luminous intensity of 300 candelas, there exists a plane surface 15 m below. The value of illuminance at a point on the plane surface where the luminous flux rays are inclined at an angle of 30 to the surface is 58.45 Kilolux. 1.15 lux. 1.53 lux. 17.32 lux. 58.45 Kilolux. 1.15 lux. 1.53 lux. 17.32 lux. ANSWER DOWNLOAD EXAMIANS APP
Illumination What will be the total flux emitted by a source of 60 candle power? 60 lumens. 754.2 lumens. 0.001326 lumens. None of these. 60 lumens. 754.2 lumens. 0.001326 lumens. None of these. ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in radians. lux. lumens. candela. radians. lux. lumens. candela. ANSWER DOWNLOAD EXAMIANS APP
Illumination ___________________________ factor is defined as the ratio of the illumination when everything is clean to illumination under normal working conditions. Maintenance. Absorption factor. Depreciation. Utilization. Maintenance. Absorption factor. Depreciation. Utilization. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 30 lumens / watt. 60 lumens / watt. 70 lumens / watt. 40 lumens / watt. 30 lumens / watt. 60 lumens / watt. 70 lumens / watt. 40 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP
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