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? 2 5 6 4 2 5 6 4 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 1.53 lux. 1.15 lux. 58.45 Kilolux. 17.32 lux. 1.53 lux. 1.15 lux. 58.45 Kilolux. 17.32 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 solid angle subtended by an area of 2400 cm2 on the surface of a sphere of diameter 1.2 m is 1 / 3. 2 / 5. 3 / 2. 2 / 3. 1 / 3. 2 / 5. 3 / 2. 2 / 3. ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in candela. radians. lumens. lux. candela. radians. lumens. lux. ANSWER DOWNLOAD EXAMIANS APP
Illumination Total flux or lumens required in any lighting scheme depends inversely on utilization factor. reduction factor. reflection factor. None of these utilization factor. reduction factor. reflection factor. None of these ANSWER DOWNLOAD EXAMIANS APP
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