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ESE 2021 Technical Quiz || 3 Phase Transformer, Scott Connection, Efficiency & Regulation

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Question 1

In Scott connection, if the turns ratio of primary to secondary of main transformer is K, then the teaser transformer has the transformation ratio of

Question 2

Which of the following 3-phase connections of a transformer is rarely used?

Question 3

The 3-ɸ transformer connection is shown below in figure. Calculate the secondary line current?

Question 4

The iron loss in a 100 KVA transformer is 1 kW and full load copper losses are 3 kW. The maximum efficiency occur at a load of

Question 5

Power transformers are generally designed to have maximum efficiency around:-
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Jun 6ESE & GATE EE

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Chetan GoyalChetan GoyalMember since Mar 2021
AIR 1805, GATE2021
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