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ITI
Electrician
Electrician Set-1
Sources of Light
23

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

23) If on removing a defective starter, the fluorescent tube lights up, the fault lies in the :

choke

tube

stater

line switch

Answer is:

stater

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

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

24) A separate starter and socket is required for a fluorescent lamp. What is it called as ?

Instant start

Ballast

Rapid start

Preheat

Answer is:

Preheat

25) What is the purpose of the choke after the fluorescent tube is just lighted to its full brightness ?

For supplying a higher operating current

Smoothing the sinusoidal operating current

Limiting the current flowing through the fluorescent tube filaments

Heating the filaments continuously during operation

Answer is:

Limiting the current flowing through the fluorescent tube filaments

26) There is some vibrating sound from the choke when a tube lamp is switched 'on'. Which one of the following is the reason for this.

Loose connection in the choke

Loose core

Loose winding turns

Loose cover screw

Answer is:

Loose core

27) The starter of a fluorescent tube lamp has been removed from its holder after the tube is lighted what will happen to the function of the tube lamp ?

Tube lamp will begin to flicker

Tube lamp will go out immediately

Tube will operate normally

Tube will begin to hum very much

Answer is:

Tube will operate normally

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

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