Magnetic Circuit When both the inductance and resistance of a coil are doubled the value of 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 Time constant remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Conductivity is analogous to Resistivity Retentivity Inductance Permeability Resistivity Retentivity Inductance Permeability ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit An air gap is usually inserted in magnetic circuits to Increase the flux Prevent saturation None of the listed here Increase m.m.f. Increase the flux Prevent saturation None of the listed here Increase m.m.f. ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit Laminated cores, in electrical machines, are used to reduce Copper loss All of the listed here Hysteresis loss Eddy current loss Copper loss All of the listed here Hysteresis loss Eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Magnetic Circuit The rate of rise of current through an inductive coil is maximum At 63.2% of its maximum steady value At the start of the current flow Near the final maximum value of current After one time constant At 63.2% of its maximum steady value At the start of the current flow Near the final maximum value of current After one time constant 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 500 50 20 70 500 50 20 70 ANSWER DOWNLOAD EXAMIANS APP
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