EXAMIANS
Which among the following lamps has the maximum burning hours?
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Unit of luminous flux is
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In illumination technology total lumens emitted by source / total lumens available after waste of light is equal to
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Illumination can be expressed in
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Candela/metre square is the unit of which photometric quantity?
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What is the work of a driver in case of an LED?
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___________________________ factor is defined as the ratio of the illumination when everything is clean to illumination under normal working conditions.
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A 1000 W bulb fitted with a reflector illuminates an area of 3 m x 3 m with an average illumination of 450 lux. If the bulb has and efficiency of 9 lumens / watt the efficiency of the reflector is
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Total flux or lumens required in any lighting scheme depends inversely on
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Which lamp has a negative Colour Rendering Index (CRI)?
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