First slide

Magnetic properites of materials.

Question

Soft iron is used as core in transformer because. It has

Moderate

A

High retentivity, high permeability and low coercivity
B

Narrow hysteresis loop, high permeability, high coercivity
C

Wide hysteresis loop, high retentivity and high coercivity
D

Narrow hysteresis loop, low retentivity and low coercivity

Solution

for temporary magnet energy loss depends on area of the hysteresis loop low coercivity assures easy demagnetization

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