Electromagnetic induction The coefficient of coupling between two air core coils depends on Mutual inductance between two coils only Mutual inductance and self inductance of two coils Self-inductance of two coils only None of the listed here Mutual inductance between two coils only Mutual inductance and self inductance of two coils Self-inductance of two coils only None of the listed here 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 insulated from each other The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The magnetic flux is concentrated in the air gap of the core The laminations are insulated from each other The laminations are stacked vertically More wire can be used with less D.C. resistance in coil ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is 1000 ohms 5000 ohms 500 ohms 100 ohms 1000 ohms 5000 ohms 500 ohms 100 ohms ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following is not a unit of inductance? Hennry Coulomb/volt ampere Volt second per ampere All of the listed here Hennry Coulomb/volt ampere Volt second per ampere All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction For a purely inductive circuit which of the following is true? 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 Actual power of the circuit is zero Apparent power is zero Any capacitance even if present in the circuit will not be charged ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be Unaffected Quadrupled Halved Doubled Unaffected Quadrupled Halved Doubled ANSWER DOWNLOAD EXAMIANS APP
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