Illumination In illumination technology total lumens emitted by source / total lumens available after waste of light is equal to beam factor. waste light factor. absorption factor. utilization factor. beam factor. waste light factor. absorption factor. utilization factor. 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 None of these both A and B. Lambert’s cosine law. law of square inverse. None of these both A and B. Lambert’s cosine law. law of square inverse. ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela is the unit of which? Luminous flux. Luminous intensity. Wavelength. Frequency. Luminous flux. Luminous intensity. Wavelength. Frequency. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 40 lumens / watt. 60 lumens / watt. 30 lumens / watt. 70 lumens / watt. 40 lumens / watt. 60 lumens / watt. 30 lumens / watt. 70 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficacy of a typical HPSV lamp is in between 40 - 70 lm/watt. 120 - 200 lm/watt. 70 - 120 lm/watt. 10 - 40 lm/watt 40 - 70 lm/watt. 120 - 200 lm/watt. 70 - 120 lm/watt. 10 - 40 lm/watt ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in lux. lumens. candela. radians. lux. lumens. candela. radians. ANSWER DOWNLOAD EXAMIANS APP
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