Question
Hysteresis loops for two magnetic materials $$A$$ and $$B$$ are given below :
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 transformers and $$B$$ for electric generators.
B.
$$B$$ for electromagnets and transformers.
C.
$$A$$ for electric generators and transformers.
D.
$$A$$ for electromagnets and $$B$$ for electric generators.
Answer :
$$B$$ for electromagnets and transformers.
Solution :
Graph $$\left[ A \right]$$ is for material used for making permanent magnets (high coercivity)
Graph $$\left[ B \right]$$ is for making electromagnets and transformers.
Graph $$\left[ A \right]$$ is for material used for making permanent magnets (high coercivity)
Graph $$\left[ B \right]$$ is for making electromagnets and transformers.