Magnetic Circuit A material for good magnetic memory should have High retentivity Low retentivity High permeability Low hysteresis loss High retentivity Low retentivity High permeability Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Permeability in a magnetic circuit corresponds to_________ in an electric circuit. Resistivity Conductance Resistance Conductivity Resistivity Conductance Resistance Conductivity ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Those materials are well suited for making permanent magnets which have ________ retentivity and ________ coercivity. Low, high High, low Low, low High, high Low, high High, low Low, low High, high ANSWER DOWNLOAD EXAMIANS APP
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 Initial rate of rise of current is doubled Time constant remains unchanged Time constant is halved Final steady current is doubled Initial rate of rise of current is doubled Time constant remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit The rate of rise of current through an inductive coil is maximum After one time constant Near the final maximum value of current At the start of the current flow At 63.2% of its maximum steady value After one time constant Near the final maximum value of current At the start of the current flow At 63.2% of its maximum steady value ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Hard steel is suitable for making permanent magnets because It has good residual magnetism Its mechanical strength is low Its hysteresis loop has large area Its mechanical strength is high It has good residual magnetism Its mechanical strength is low Its hysteresis loop has large area Its mechanical strength is high ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS