Magnetic Circuit The rate of rise of current through an inductive coil is maximum Near the final maximum value of current At the start of the current flow After one time constant At 63.2% of its maximum steady value Near the final maximum value of current At the start of the current flow After one time constant At 63.2% of its maximum steady value ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Silicon steel is used in electrical machines because it has Low retentivity High coercivity Low hysteresis loss Low coercivity Low retentivity High coercivity Low hysteresis loss Low coercivity ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit In a magnetic material hysteresis loss takes place primarily due to Flux density lagging behind magnetizing force Molecular friction Rapid reversals of its magnetization It high retentivity Flux density lagging behind magnetizing force Molecular friction Rapid reversals of its magnetization It high retentivity ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit An air gap is usually inserted in magnetic circuits to Prevent saturation Increase the flux Increase m.m.f. None of the listed here Prevent saturation Increase the flux Increase m.m.f. None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be None of the listed here Large Small Zero None of the listed here Large Small Zero ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Energy stored by a coil is doubled when its current is increased by percent. 44.6 41.4 47.5 42.5 44.6 41.4 47.5 42.5 ANSWER DOWNLOAD EXAMIANS APP
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