Electromagnetic Field Theory In order to minimize loss due to hysteresis the magnetic material should have high resistivity. large coercivity. high hysteresis coefficient. small B-H loop area. high resistivity. large coercivity. high hysteresis coefficient. small B-H loop area. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity less than that of disc but in opposite direction. equal to that of disc and in the opposite direction. equal to that of disc and in the same direction. less than that of disc and in the same direction. less than that of disc but in opposite direction. equal to that of disc and in the opposite direction. equal to that of disc and in the same direction. less than that of disc and in the same direction. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In above problem the induced emf will be reduced to half if the conductor moves an angle of 45° to the direction of field. 75° to the direction of field. 30° to the direction of field. 60° to the direction of field. 45° to the direction of field. 75° to the direction of field. 30° to the direction of field. 60° to the direction of field. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The energy stored in the magnetic field in a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying a current at 10 amp, is 0.15 joule. 0.015 joule. 0.015 joule. 1.15 joule. 0.15 joule. 0.015 joule. 0.015 joule. 1.15 joule. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of following circuit element stores energy in electro-magnetic field? Variable Resistor. Condenser. Inductor. Capacitor. Variable Resistor. Condenser. Inductor. Capacitor. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A conductor of length L has current I passing through it, when it is placed parallel to strong magnetic field. The force experienced by the conductor will be BI2L. zero. BL2I. BIL. BI2L. zero. BL2I. BIL. ANSWER DOWNLOAD EXAMIANS APP
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