Electromagnetic induction A laminated iron core has reduced eddy-current losses because The magnetic flux is concentrated in the air gap of the core The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The magnetic flux is concentrated in the air gap of the core The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The laminations are insulated from each other ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following inductor will have the least eddy current losses? Laminated iron core Iron core Powdered iron core Air core Laminated iron core Iron core Powdered iron core Air core 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 Change of number of turns of coil Variation in voltage to the coil Variation in coil current The resistance of magnetic path Change of number of turns of coil Variation in voltage to the coil Variation in coil current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following is not a unit of inductance? Volt second per ampere All of the listed here Coulomb/volt ampere Hennry Volt second per ampere All of the listed here Coulomb/volt ampere Hennry 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 30 N 90 N 120 N 60 N 30 N 90 N 120 N 60 N ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The law that the induced e.m.f. and current always oppose the cause producing them is due to Faraday Lenz Coulomb Newton Faraday Lenz Coulomb Newton ANSWER DOWNLOAD EXAMIANS APP
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