Electromagnetic induction Air-core coils are practically free from Eddy current losses Both Hysteresis losses & Eddy current losses None of the listed here Hysteresis losses Eddy current losses Both Hysteresis losses & Eddy current losses None of the listed here Hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by Change of number of turns of coil Variation in coil current The resistance of magnetic path Variation in voltage to the coil Change of number of turns of coil Variation in coil current The resistance of magnetic path Variation in voltage to the coil ANSWER DOWNLOAD EXAMIANS APP
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 0.02 wb 2 wb 0.2 wb 20 wb 0.02 wb 2 wb 0.2 wb 20 wb ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Two 300 uH coils in series without mutual coupling have a total inductance of 1200 uH 900 uH 600 uH 300 uH 1200 uH 900 uH 600 uH 300 uH 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 20 H 15 H 5 H 10 H 20 H 15 H 5 H 10 H ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns. No Yes No Yes ANSWER DOWNLOAD EXAMIANS APP
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