Electromagnetic induction The polarity of the induced voltage can be determined by using the left-hand generator rule. Yes No Yes No ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns. Yes No Yes No ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction An e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be 4 A/s 12 A/s 20 A/s 16 A/s 4 A/s 12 A/s 20 A/s 16 A/s ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A laminated iron core has reduced eddy-current losses because The laminations are insulated from each other More wire can be used with less D.C. resistance in coil The laminations are stacked vertically The magnetic flux is concentrated in the air gap of the core The laminations are insulated from each other More wire can be used with less D.C. resistance in coil The laminations are stacked vertically The magnetic flux is concentrated in the air gap of the core ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Mutually inductance between two magnetically coupled coils depends on Permeability of the core All of the listed here The number of their turns Cross-sectional area of their common core Permeability of the core All of the listed here The number of their turns Cross-sectional area of their common core ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The magnitude of the induced e.m.f. in a conductor depends on the Rate of change of flux-linkages Amount of flux cut Flux density of the magnetic field Amount of flux linkages Rate of change of flux-linkages Amount of flux cut Flux density of the magnetic field Amount of flux linkages ANSWER DOWNLOAD EXAMIANS APP
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