Magnetic Circuit Silicon steel is used in electrical machines because it has Low coercivity Low retentivity Low hysteresis loss High coercivity Low coercivity Low retentivity Low hysteresis loss High coercivity ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Hysteresis loss least depends on Frequency Steinmetz’s coefficient of material Ambient temperature Volume of material Frequency Steinmetz’s coefficient of material Ambient temperature Volume of material ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is ___________Vs 50 500 70 20 50 500 70 20 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 Those materials are well suited for making permanent magnets which have ________ retentivity and ________ coercivity. High, high High, low Low, low Low, high High, high High, low Low, low Low, high ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit The property of a material which opposes the creation of magnetic flux in it is known as Magneto-motive force Permeance Reluctivity Reluctance Magneto-motive force Permeance Reluctivity Reluctance ANSWER DOWNLOAD EXAMIANS APP
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