Principle of Operation in Three Phase Transformers - MCQs with Answers

Principle of Operation in Three Phase Transformers - MCQs with Answers

Q1. In a three phase transformer, the angle between two consecutive cores is

a. 30 degree
b. 60 degree
c. 120 degree
d. 150 degree

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Q2. In a three phase transformer, the current flowing in three primaries produces three corresponding fluxes. The sum of these three fluxes at any instant is

a. Zero
b. Three times of any individual flux
c. One third of any individual flux
d. None of these.

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Q3. A bank of three single phase transformer can be used our obtaining the three phase output. Three magnetic circuits produced in case of a bank of three single phase transformer and in case of single phase transformer are

a. Linked, independent
b. Independent, linked
c. Linked, linked
d. Both are independent

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