Illumination Which lamp is best suited for lighting an International sports arena? Incandescent LED Metal Halide Compact Fluorescent Incandescent LED 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 2 / 5. 1 / 3. 2 / 3. 3 / 2. 2 / 5. 1 / 3. 2 / 3. 3 / 2. ANSWER DOWNLOAD EXAMIANS APP
Illumination The illumination of the surface varies directly with cosine of the angle between normal to surface and direction of the inclined light is given by both A and B. law of square inverse. Lambert’s cosine law. None of these both A and B. law of square inverse. Lambert’s cosine law. None of these ANSWER DOWNLOAD EXAMIANS APP
Illumination In illumination technology total lumens emitted by source / total lumens available after waste of light is equal to absorption factor. utilization factor. beam factor. waste light factor. absorption factor. utilization factor. beam factor. waste light factor. ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela/metre square is the unit of which photometric quantity? Luminous flux Luminous Intensity Illuminance Luminance Luminous flux Luminous Intensity Illuminance Luminance ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficacy of a typical HPSV lamp is in between 10 - 40 lm/watt 120 - 200 lm/watt. 70 - 120 lm/watt. 40 - 70 lm/watt. 10 - 40 lm/watt 120 - 200 lm/watt. 70 - 120 lm/watt. 40 - 70 lm/watt. ANSWER DOWNLOAD EXAMIANS APP
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