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 Which cells in the eye are responsible for scotopic vision? None of these Cone cells Both ‘a’ and ‘b’ Rod cells None of these Cone cells Both ‘a’ and ‘b’ Rod cells ANSWER DOWNLOAD EXAMIANS APP
Illumination In illumination technology total lumens emitted by source / total lumens available after waste of light is equal to beam factor. utilization factor. absorption factor. waste light factor. beam factor. utilization factor. absorption factor. waste light factor. ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in lux. lumens. candela. radians. lux. lumens. candela. radians. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? LED. Metal halide. Compact Fluorescent. Incandescent. LED. Metal halide. Compact Fluorescent. Incandescent. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp is best suited for lighting an International sports arena? Compact Fluorescent LED Incandescent Metal Halide Compact Fluorescent LED Incandescent Metal Halide ANSWER DOWNLOAD EXAMIANS APP