Question
Medium
Solving time: 3 mins
Hysteresis loops for two magnetic materials and 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) for electric generators and transformers
(b) for electromagnets and for electric generators
(c) for transformers and for electric generators
(d) for electromagnets and transformers
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Text solutionVerified
Area of hysteresis loop is proportional to the net energy absorbed per unit volume by the material, as it is taken over a complete cycle of magnetisation.
For electromagnets and transformers, energy loss should be low.
i.e. thin hysteresis curves.
Also, when and should be small when .
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Question Text | Hysteresis loops for two magnetic materials and 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) for electric generators and transformers (b) for electromagnets and for electric generators (c) for transformers and for electric generators (d) for electromagnets and transformers |
Topic | Magnetism and Matter |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 |
Upvotes | 98 |