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Objective Questions
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Electrician
Electrician Set-1
Sources of Light
44

Sources of Light MCQ - Electrician (Set-1) with Answers

44) The average life of sodium vapour lamp is about

1000 hours

2000 hours

3000 hours

6000 hours

Answer is:

6000 hours

Sources of Light MCQ - Electrician (Set-1) with Answers

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Related Sources of Light MCQ - Electrician (Set-1) with Answers

45) Light used in the front yard of the house should not attract insects in view of safety. Which type of lamp you will avoid ?

Mercury vapour lamp

Sodium vapour lamp

Halogen lamp

GLS lamp

Answer is:

Mercury vapour lamp

46) MB type mercury vapour lamp operates at a high extra pressure of

2 to 10 atmospheres

3 to 10 atmospheres

4 to 10 atmospheres

5 to 10 atmospheres

Answer is:

5 to 10 atmospheres

47) CFL's are replacing incandescent lamps due to

energy savings

longer life time

short life

energy saving and longer life

Answer is:

energy saving and longer life

48) Carbon filament lamp gives

bluish light

reddish light

pinkish light

greenish light

Answer is:

reddish light

Sources of Light MCQ - Electrician (Set-1) with Answers

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