Magnetic Circuit When both the inductance and resistance of a coil are doubled the value of Time constant is halved Final steady current is doubled Time constant remains unchanged Initial rate of rise of current is doubled Time constant is halved Final steady current is doubled Time constant remains unchanged Initial rate of rise of current is doubled 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 It high retentivity Rapid reversals of its magnetization Flux density lagging behind magnetizing force Molecular friction It high retentivity Rapid reversals of its magnetization 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 Zero Small None of the listed here Large Zero Small None of the listed here Large ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit The relative permeability of a ferromagnetic material is More than 100 Ωr 1000 Less than one More than one More than 10 More than 100 Ωr 1000 Less than one More than one More than 10 ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Hysteresis loss least depends on Steinmetz’s coefficient of material Ambient temperature Frequency Volume of material Steinmetz’s coefficient of material Ambient temperature Frequency Volume of material ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Hard steel is suitable for making permanent magnets because Its mechanical strength is high Its hysteresis loop has large area It has good residual magnetism Its mechanical strength is low Its mechanical strength is high Its hysteresis loop has large area It has good residual magnetism Its mechanical strength is low ANSWER DOWNLOAD EXAMIANS APP
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