Electromagnetic induction A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is 3500 mH 250 mH None of the listed here 350 mH 3500 mH 250 mH None of the listed here 350 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A 200 turn coil has an inductance of 12 mH. If the number of turns is increased to 400 turns, all other quantities (area, length etc.) remaining the same, the inductance will be 48 mH 6 mH 24 mH 12 mH 48 mH 6 mH 24 mH 12 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The law that the induced e.m.f. and current always oppose the cause producing them is due to Newton Coulomb Lenz Faraday Newton Coulomb Lenz Faraday ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction For a purely inductive circuit which of the following is true? Actual power of the circuit is zero Relative power is zero Apparent power is zero Any capacitance even if present in the circuit will not be charged Actual power of the circuit is zero Relative power is zero Apparent power is zero Any capacitance even if present in the circuit will not be charged 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 6 mH 18 mH 36 mH 12 mH 6 mH 18 mH 36 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following inductor will have the least eddy current losses? Air core Iron core Laminated iron core Powdered iron core Air core Iron core Laminated iron core Powdered iron core ANSWER DOWNLOAD EXAMIANS APP
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