For the parallel operation of single phase transformers it is necessary that they should have
A)same efficiency
B)same polarity
C)same kVA rating
D)same number of turns on the secondary side.

Question

Quizplus · Accepted Answer

For parallel operation of single phase transformers, it is crucial that they have the same polarity to ensure that the phase sequence and direction of the induced EMFs are aligned, preventing circulating currents and potential damage. Other factors like efficiency, kVA rating, and the number of turns can vary, provided the voltage ratios are closely matched and the transformers are properly connected considering their respective capacities.

For the Parallel Operation of Single Phase Transformers It Is