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Electrician
Electrician Set-1
Transformers
31

Transformers MCQ - Electrician (Set-1) with Answers

31) Which one of the following methods will be preferred for a transformer cooling, above 200 kVA ?

Insulating oil

Air blast

Oil natural, Air forced

Oil forced, Water forced

Answer is:

Insulating oil

Transformers MCQ - Electrician (Set-1) with Answers

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

32) Scott connections are used to transform :

single-phase supply into three-phase supply

single-phase supply into two-phase supply

three-phase supply into two-phase supply

star-connected primary into delta-connected secondary

Answer is:

three-phase supply into two-phase supply

33) Which type of connection in 3 phase transformers is used for the sub-station end of the transmission lines ?

Star-star

Star-delta

Delta-Delta

Delta-star

Answer is:

Star-delta

34) In three phase transformer, different methods of connections are possible. Which type of connection used in distribution transformer ?

Star-star

Star-delta

Delta-Delta

Delta-star

Answer is:

Delta-star

35) Which type of transformer winding has no ohmic resistance and no magnetic leakage resulting in no losses ?

Distribution transformer

Power transformer

Ideal transformer

Instrument transformer

Answer is:

Ideal transformer

Transformers MCQ - Electrician (Set-1) with Answers

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