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Electrician
Electrician Set-2
Illumination
8

Illumination MCQ with Answers

8) What is the purpose of ignitor in high pressure sodium vapour lamp circuit?

Decreases the starting current

Increases the running voltage

Decreases the running current

Generates high voltage pulse at starting

Answer is:

Generates high voltage pulse at starting

Illumination MCQ with Answers

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Related Illumination MCQ with Answers

9) Which type of light fitting design has free from glare?

Semi direct type

Semi indirect type

Direct lighting type

Indirect lighting type

Answer is:

Semi indirect type

10) Why the outer tube of a high pressure metal halide lamp made of boro silicate glass?

Increase the lighting effect

Withstand heavy temperatu

Withstand atmospheric pressure

Reduce the ultra violet radiation from lamp

Answer is:

Reduce the ultra violet radiation from lamp

11) What is the term refers luminous flux given by light source per unit solid angle?

Lumen

Candela

Illuminance

Luminous intensity

Answer is:

Luminous intensity

12) What is the unit of luminous flux?

Lux

Lumen

Candela

Lumen/m²

Answer is:

Lumen

Illumination MCQ with Answers

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