1) Hysteresis loops for two magnetic materials A and B are as 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 Answer: Option DExplanation:We need high retentivity and high coercivity for electromagnets and a small area of hysteresis loop for transformers.
