EXAMIANS
Candela is the unit of which?
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Total flux or lumens required in any lighting scheme depends inversely on
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What will be the number of lamps, each having 300 lumens, required to obtain an average illuminance of 50 lux on a 4m × 3m rectangular room?
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Luminous efficacy of a typical HPSV lamp is in between
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The solid angle subtended by an area of 2400 cm2 on the surface of a sphere of diameter 1.2 m is
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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?
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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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Solid angle is expressed in terms of
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Which lamp has the best Colour Rendering Index (CRI)?
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Candela/metre square is the unit of which photometric quantity?
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