Illumination Which lamp has a negative Colour Rendering Index (CRI)? Fluorescent LED High pressure sodium vapour Low pressure sodium vapour Fluorescent LED High pressure sodium vapour Low pressure sodium vapour ANSWER DOWNLOAD EXAMIANS APP
Illumination The illumination at a point 5 meters below a lamp in 6 lux. The candle power of the lamp is 150. 30 140. 200. 150. 30 140. 200. ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is lux. lumens. steradians. candela. lux. lumens. steradians. candela. ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to limit the flow of current. None of these. provide a kick start when voltage is induced. both ‘a’ and ‘b’. limit the flow of current. None of these. provide a kick start when voltage is induced. both ‘a’ and ‘b’. 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 / 3. 1 / 3. 2 / 5. 3 / 2. 2 / 3. 1 / 3. 2 / 5. 3 / 2. 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? 2:1 2√2 : 1 1:2 1: 2√2 2:1 2√2 : 1 1:2 1: 2√2 ANSWER DOWNLOAD EXAMIANS APP
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