Electromagnetic induction An average voltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is 2 wb 0.02 wb 0.2 wb 20 wb 2 wb 0.02 wb 0.2 wb 20 wb ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the fpllowing inductor will have the least eddy current losses ? Powdered iron core Iron core Air core Laminated iron core Powdered iron core Iron core Air core Laminated iron core 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 Halved Quadrupled Doubled Unaffected Halved Quadrupled Doubled ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A laminated iron core has reduced eddy-current losses because The laminations are stacked vertically The laminations are insulated from each other 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 stacked vertically The laminations are insulated from each other More wire can be used with less D.C. resistance in coil The magnetic flux is concentrated in the air gap of the core 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 120 N 60 N 30 N 90 N 120 N 60 N 30 N ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is 350 mH 250 mH None of the listed here 3500 mH 350 mH 250 mH None of the listed here 3500 mH ANSWER DOWNLOAD EXAMIANS APP
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