Magnetic Circuit Silicon steel is used in electrical machines because it has Low coercivity High coercivity Low retentivity Low hysteresis loss Low coercivity High coercivity Low retentivity Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Those materials are well suited for making permanent magnets which have ________ retentivity and ________ coercivity. High, high High, low Low, high Low, low High, high High, low Low, high Low, low ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit An air gap is usually inserted in magnetic circuits to 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 Prevent saturation ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit When both the inductance and resistance of a coil are doubled the value of Time constant remains unchanged Initial rate of rise of current is doubled Final steady current is doubled Time constant is halved Time constant remains unchanged Initial rate of rise of current is doubled Final steady current is doubled Time constant is halved ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit In a magnetic material hysteresis loss takes place primarily due to Rapid reversals of its magnetization Molecular friction It high retentivity Flux density lagging behind magnetizing force Rapid reversals of its magnetization Molecular friction It high retentivity Flux density lagging behind magnetizing force ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Conductance is analogous to Flux Permeance Inductance Reluctance Flux Permeance Inductance Reluctance ANSWER DOWNLOAD EXAMIANS APP
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