Questions
Select the correct statement
a
Retentivity of soft iron is less than that of steel.
b
Hysteresis loss per cycle per unit volume of soft iron is less than that of steel.
c
Coercivity of soft iron is less that that of steel.
d
Both (2) and (3) are correct.
detailed solution
Correct option is D
Retentivity of soft iron is more than that of steel but coercivity of soft iron is less than that of steel, so option (3) is right. Again B-H curve of soft iron is very narrow and area enclosed by B-H curve is less than that of steel. Hence option (2) is also right.Talk to our academic expert!
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