By | June 11, 2020
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Created by Surendra

Electric Illumination Quiz in English Set 1

All Important Question Answers for Electrician Related Exams

1 / 20

Which photometer depends for its operation on Inverse Square Law ?

2 / 20

Radiant efficiency of the luminous source depends on

3 / 20

The illumination level in houses is in the range

4 / 20

Candela is the unit of

5 / 20

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

6 / 20

Illumination level required for precision work is around

7 / 20

Light is produced in electric discharge lamps by

8 / 20

The unit of solid angle is

9 / 20

Melting temperature of tungsten is

10 / 20

Which of the following lamp gives nearly monochromatic light ?

11 / 20

The unit of luminous flux is

12 / 20

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

13 / 20

Lumen/watt is the unit of

14 / 20

Carbon arc lamps are commonly used in

15 / 20

Luminous efficiency of a fluorescent tube is

16 / 20

Which of the following will need lowest level of illumination ?

17 / 20

Light waves travel with a velocity of

18 / 20

One lumen per square meter is the same as

19 / 20

Candela is-the unit for

20 / 20

The color temperature of day light is around

कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें।

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