Electromagnetic induction A moving magnetic field will produce the same effect as a conductor that is moving. True False True False ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A laminated iron core has reduced eddy-current losses because More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The laminations are stacked vertically The magnetic flux is concentrated in the air gap of the core More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The laminations are stacked vertically The magnetic flux is concentrated in the air gap of the core ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Two 300 uH coils in series without mutual coupling have a total inductance of 300 uH 1200 uH 600 uH 900 uH 300 uH 1200 uH 600 uH 900 uH 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 Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla 1000 N 300 N 400 N 100 N 1000 N 300 N 400 N 100 N 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 The resistance of magnetic path Variation in voltage to the coil Variation in coil current Change of number of turns of coil The resistance of magnetic path Variation in voltage to the coil Variation in coil current ANSWER DOWNLOAD EXAMIANS APP
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