Electromagnetic induction For a purely inductive circuit which of the following is true? Actual power of the circuit is zero Apparent power is zero Any capacitance even if present in the circuit will not be charged Relative power is zero Actual power of the circuit is zero Apparent power is zero Any capacitance even if present in the circuit will not be charged Relative power is zero ANSWER DOWNLOAD EXAMIANS APP
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 100 N 300 N 400 N 1000 N 100 N 300 N 400 N 1000 N ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is 10 H 5 H 20 H 15 H 10 H 5 H 20 H 15 H 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 Lenz Faraday Newton Coulomb Lenz Faraday Newton Coulomb ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is 1000 ohms 100 ohms 5000 ohms 500 ohms 1000 ohms 100 ohms 5000 ohms 500 ohms ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction If current in a conductor increases then according to Lenz's law self-induced voltage will Aid the applied voltage Produce current opposite to the increasing current Tend to decrease the amount of current Aid the increasing current Aid the applied voltage Produce current opposite to the increasing current Tend to decrease the amount of current Aid the increasing current ANSWER DOWNLOAD EXAMIANS APP
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