In a magnetic material hysteresis loss takes place primarily due to
A. Rapid reversals of its magnetization
B. Flux density lagging behind magnetizing force
C. Molecular friction
D. It high retentivity
Answer: Option D
This Question Belongs to Electrical Engineering >> Magnetic Circuit
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A. E.M.F.
B. Current
C. Current density
D. Conductivity
Point out the wrong statement. Magnetic leakage is undesirable in electric machines because it
A. Lowers their power efficiency
B. Increases their cost of manufacture
C. Leads to their increased weight
D. Produces fringing
Laminated cores, in electrical machines, are used to reduce
A. Copper loss
B. Eddy current loss
C. Hysteresis loss
D. All of the above
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