Question

Assertion: Soft iron is used as transformer core.
Reason: Soft iron has narrow hysteresis loop.
A. If both Assertain and Reason are true and Reason is the correct explanation of Assertain
B. If both Assertain and Reason are true but Reason is not correct explantion of Assertain
C. If Assertion is true but Reason is false
D. If Assertion is false but Reason in true.

Answer 1

Correct Answer - A
The core of a transformer undergoes cycles of magnetisation again and again. The energy loss is lesser and hence it is usd moving coil galvometer.