Illumination Which lamps can be directly connected to a solar cell? Incandescent Metal Halide LED Compact Fluorescent Incandescent Metal Halide LED Compact Fluorescent 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? 1: 2√2 2:1 1:2 2√2 : 1 1: 2√2 2:1 1:2 2√2 : 1 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 Total flux or lumens required in any lighting scheme depends inversely on reflection factor. reduction factor. utilization factor. None of these reflection factor. reduction factor. utilization factor. None of these ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela is the unit of which? Luminous flux. Frequency. Luminous intensity. Wavelength. Luminous flux. Frequency. Luminous intensity. Wavelength. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? Low pressure sodium vapour Fluorescent High pressure sodium vapour LED Low pressure sodium vapour Fluorescent High pressure sodium vapour LED ANSWER DOWNLOAD EXAMIANS APP
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