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Question

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:

472782_07fb3466a2154161afd973775bcd1b41.png

A
A for electric generators and transformers
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B
A for electromagnets and B for electric generators
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C
A for transformer and B for electric generators
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D
B for electromagnets and transformers
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Solution

The correct option is A A for electromagnets and B for electric generators
Hysteresis loop with more area signifies a 'hard' ferromagnetic material and hysteresis loop with less area signifies a 'soft' ferromagnetic material. Hence, A is good for electromagnets and B is good for electric generators.

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