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 0.2 wb 20 wb 0.02 wb 2 wb 0.2 wb 20 wb 0.02 wb 2 wb 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 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 Change of number of turns of coil Variation in coil current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction In case all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be 1.0 2.5 0.5 2.0 1.0 2.5 0.5 2.0 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 18 mH 6 mH 36 mH 12 mH 18 mH 6 mH 36 mH 12 mH 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 Aid the increasing current Tend to decrease the amount of current Aid the applied voltage Produce current opposite to the increasing current Aid the increasing current Tend to decrease the amount of current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following is unit of inductance? Weber/metre Hennry Ohm Ampere turns Weber/metre Hennry Ohm Ampere turns ANSWER DOWNLOAD EXAMIANS APP
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