Electromagnetic induction A laminated iron core has reduced eddy-current losses because The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The magnetic flux is concentrated in the air gap of the core The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The magnetic flux is concentrated in the air gap of the core ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A conductor 2 meters long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be 25 V 12 V 15 V 10 V 25 V 12 V 15 V 10 V ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The self inductances of two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is 36 mH 18 mH 12 mH 6 mH 36 mH 18 mH 12 mH 6 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which circuit element(s) will oppose the change in circuit current? Resistance only Inductance and capacitance Inductance only Capacitance only Resistance only Inductance and capacitance Inductance only Capacitance only ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The property of coil by which a counter e.m.f. is induced in it when the current through the coil changes is known as Capacitance Mutual inductance Self-inductance Series aiding inductance Capacitance Mutual inductance Self-inductance Series aiding inductance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Increasing the field or increasing the current will decrease the force on the conductor. No Yes No Yes ANSWER DOWNLOAD EXAMIANS APP
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