Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is

A Approximately equal to one
B Less than one
C Great than one
D Cannot be found

Correct Answer: Approximately equal to one

Copper In auto transformer /copper in two-winding transformer = 1- T2/T1. This means that an auto transformer requires the use of lesser quantity of copper given by the ratio of turns. Hence, if the transformation ratio is approximately equal to one, then the copper saving is good and the copper loss is less.
Bissoy MCQ
#Transformers #Autotransformer

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