Electromagnetic induction Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla 1000 N 100 N 300 N 400 N 1000 N 100 N 300 N 400 N ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A laminated iron core has reduced eddy-current losses because 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 The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The laminations are insulated from each other 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 18 mH 36 mH 12 mH 6 mH 18 mH 36 mH 12 mH 6 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following circuit elements will oppose the change in circuit current? Capacitance Resistance All of the listed here Inductance Capacitance Resistance All of the listed here Inductance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Higher the self-inductance of a coil, Longer the delay in establishing steady current through it Greater the flux produced by it Lower the e.m.f. induced Lesser its weber-turns Longer the delay in establishing steady current through it Greater the flux produced by it Lower the e.m.f. induced Lesser its weber-turns ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Mutually inductance between two magnetically coupled coils depends on All of the listed here Cross-sectional area of their common core Permeability of the core The number of their turns All of the listed here Cross-sectional area of their common core Permeability of the core The number of their turns ANSWER DOWNLOAD EXAMIANS APP
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