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Hysteresis loops for two magnetic materi...

Hysteresis loops for two magnetic materials A and B are given below :

These materials are used to make magnets for electric generators, transformer core and electromagnet core. Then it is proper to use :

A

A for electric generators and transformers

B

A for electromagnets and B for electric generators

C

A for transformers and B for electric generators

D

B for electromagnets and transformers

Text Solution

Verified by Experts

The correct Answer is:
D
In cases of generator, transformer & electromagnets we need to use materials which can be quickly magnetized & demagnetized without much loss of energy and we know.
Loss of energy/cycle `prop` area of B-H curve .
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