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? 1: 2√2 2√2 : 1 2:1 1:2 1: 2√2 2√2 : 1 2:1 1:2 ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in lumens. lux. radians. candela. lumens. lux. radians. candela. ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the work of a driver in case of an LED? To convert DC to AC Both ‘a’ and ‘b’ None of these To convert AC to DC To convert DC to AC Both ‘a’ and ‘b’ None of these To convert AC to DC ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela is the unit of which? Luminous intensity. Luminous flux. Frequency. Wavelength. Luminous intensity. Luminous flux. Frequency. Wavelength. ANSWER DOWNLOAD EXAMIANS APP
Illumination The range of visual spectrum is 300nm - 1000nm. 480nm - 760nm. 300nm - 760nm. 480nm - 1000nm. 300nm - 1000nm. 480nm - 760nm. 300nm - 760nm. 480nm - 1000nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination Total flux or lumens required in any lighting scheme depends inversely on utilization factor. reduction factor. reflection factor. None of these utilization factor. reduction factor. reflection factor. None of these ANSWER DOWNLOAD EXAMIANS APP
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