Illumination Candela is the unit of which? Luminous intensity. Wavelength. Frequency. Luminous flux. Luminous intensity. Wavelength. Frequency. Luminous flux. ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in candela. lux. lumens. radians. candela. lux. lumens. radians. ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to both ‘a’ and ‘b’. None of these. limit the flow of current. provide a kick start when voltage is induced. both ‘a’ and ‘b’. None of these. limit the flow of current. provide a kick start when voltage is induced. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 60 lumens / watt. 30 lumens / watt. 70 lumens / watt. 40 lumens / watt. 60 lumens / watt. 30 lumens / watt. 70 lumens / watt. 40 lumens / watt. 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
Illumination The solid angle subtended by an area of 2400 cm2 on the surface of a sphere of diameter 1.2 m is 2 / 5. 2 / 3. 1 / 3. 3 / 2. 2 / 5. 2 / 3. 1 / 3. 3 / 2. ANSWER DOWNLOAD EXAMIANS APP
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