Electric Illumination Quiz Set 1

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Created by Surendra

Electric Illumination Quiz in English Set 1

All Important Question Answers for Electrician Related Exams

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Radiant efficiency of the luminous source depends on

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Illumination level required for precision work is around

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Which of the following will need the highest level of illumination ?

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The illumination is directly proportional to the cosine of the angle made by the normal to the illuminated surface with the direction of the incident flux. Above statement is associated with

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One lumen per square meter is the same as

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Carbon arc lamps are commonly used in

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Which photometer depends for its operation on Inverse Square Law ?

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Melting temperature of tungsten is

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Light waves travel with a velocity of

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Lumen/watt is the unit of

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The unit of solid angle is

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Which of the following will need lowest level of illumination ?

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The illumination level in houses is in the range

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Luminous efficiency of a fluorescent tube is

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Which of the following lamp gives nearly monochromatic light ?

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Candela is the unit of

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The color temperature of day light is around

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The unit of luminous flux is

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Light is produced in electric discharge lamps by

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Candela is-the unit for

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