Which among the following lamps has the maximum burning hours? Metal halide. LED. Incandescent. Compact Fluorescent. TRUE ANSWER : ? YOUR ANSWER : ?
Total flux or lumens required in any lighting scheme depends inversely on reflection factor. reduction factor. utilization factor. None of these TRUE ANSWER : ? YOUR ANSWER : ?
Which lamp has a negative Colour Rendering Index (CRI)? LED Low pressure sodium vapour High pressure sodium vapour Fluorescent TRUE ANSWER : ? YOUR ANSWER : ?
Which cells in the eye are responsible for scotopic vision? Cone cells Rod cells None of these Both ‘a’ and ‘b’ TRUE ANSWER : ? YOUR ANSWER : ?
Which lamps can be directly connected to a solar cell? Compact Fluorescent Metal Halide LED Incandescent TRUE ANSWER : ? YOUR ANSWER : ?
The illumination at a point 5 meters below a lamp in 6 lux. The candle power of the lamp is 200. 140. 150. 30 TRUE ANSWER : ? YOUR ANSWER : ?
Which lamp is best suited for lighting an International sports arena? Incandescent LED Compact Fluorescent Metal Halide TRUE ANSWER : ? YOUR ANSWER : ?
Which lamp has the best Colour Rendering Index (CRI)? Fluorescent Incandescent High pressure sodium vapour LED TRUE ANSWER : ? YOUR ANSWER : ?
What is the work of a driver in case of an LED? Both ‘a’ and ‘b’ To convert DC to AC None of these To convert AC to DC TRUE ANSWER : ? YOUR ANSWER : ?