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ITI
Electrician
Electrician Set-1
Transformers
5

Transformers MCQ - Electrician (Set-1) with Answers

5) The efficiency of a transformer stands high because :

it works on the principle of mutual induction

it is a static instrument

its windings remain immersed in the mineral oil

there is no loss of electric power in it

Answer is:

it is a static instrument

Transformers MCQ - Electrician (Set-1) with Answers

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Related Transformers MCQ - Electrician (Set-1) with Answers

6) For equal capacity, a shell type transformer as compared to a core type transformer will have :

low copper-loss

low iron-loss

low copper and iron losses

high copper and iron losses

Answer is:

low iron-loss

7) If the supply frequency of a transformer is reduced then its iron-loss will be :

low

high

the same

very high

Answer is:

low

8) If the transformers have different voltage ratios and their parallel operation is desired then :

they will not work on load

they will not work at all

they will work at different power factors

they will work at an average voltage

Answer is:

they will not work at all

9) The capacity of a star-connected transformer as compared to a delta-connected transformer will be :

3 times

1/3 times

1/2 times

equal

Answer is:

1/3 times

Transformers MCQ - Electrician (Set-1) with Answers

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