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 If current in a conductor increases then according to Lenz's law self-induced voltage will Aid the increasing current Aid the applied voltage Tend to decrease the amount of current Produce current opposite to the increasing current Aid the increasing current Aid the applied voltage Tend to decrease the amount of current Produce current opposite to the increasing current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage? 0.5 s None of the listed here 0.2 s 0.1 s 0.5 s None of the listed here 0.2 s 0.1 s 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 36 mH 12 mH 6 mH 18 mH 36 mH 12 mH 6 mH 18 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following inductor will have the least eddy current losses? Iron core Powdered iron core Laminated iron core Air core Iron core Powdered iron core Laminated iron core Air core ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The inductance of a coil will increase under all the following conditions except When more area for each turn is provided When more length for the same number of turns is provided When the number of turns of the coil increase When permeability of the core increases When more area for each turn is provided When more length for the same number of turns is provided When the number of turns of the coil increase When permeability of the core increases ANSWER DOWNLOAD EXAMIANS APP
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