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 2 5 4 6 2 5 ANSWER DOWNLOAD EXAMIANS APP
Illumination What will be the total flux emitted by a source of 60 candle power? 0.001326 lumens. 754.2 lumens. 60 lumens. None of these. 0.001326 lumens. 754.2 lumens. 60 lumens. None of these. ANSWER DOWNLOAD EXAMIANS APP
Illumination Solid angle is expressed in terms of radians. radians / meter. steredians. degree. radians. radians / meter. steredians. degree. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp is best suited for lighting an International sports arena? Metal Halide LED Compact Fluorescent Incandescent Metal Halide LED Compact Fluorescent Incandescent ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela/metre square is the unit of which photometric quantity? Luminous Intensity Luminance Illuminance Luminous flux Luminous Intensity Luminance Illuminance Luminous flux ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the ratio of illuminance at a point 5m just below a lamp emitting 100 candelas and at a point 5m away from the first point on the same horizontal plane? 1: 2√2 1:2 2√2 : 1 2:1 1: 2√2 1:2 2√2 : 1 2:1 ANSWER DOWNLOAD EXAMIANS APP
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