Electromagnetic induction Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is 5 H 10 H 20 H 15 H 5 H 10 H 20 H 15 H ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction In case all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be 1.0 0.5 2.0 2.5 1.0 0.5 2.0 2.5 ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The magnitude of the induced e.m.f. in a conductor depends on the Amount of flux linkages Flux density of the magnetic field Rate of change of flux-linkages Amount of flux cut Amount of flux linkages Flux density of the magnetic field Rate of change of flux-linkages Amount of flux cut ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Air-core coils are practically free from Hysteresis losses Both Hysteresis losses & Eddy current losses None of the listed here Eddy current losses Hysteresis losses Both Hysteresis losses & Eddy current losses None of the listed here Eddy current losses ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A conductor carries 125 amperes of current under 60° to a magnetic field of 1.1 tesla. The force on the conductor will be nearly 90 N 60 N 30 N 120 N 90 N 60 N 30 N 120 N 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 12 mH 18 mH 36 mH 6 mH 12 mH 18 mH 36 mH 6 mH ANSWER DOWNLOAD EXAMIANS APP
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