Electromagnetic induction Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be Quadrupled Doubled Halved Unaffected Quadrupled Doubled Halved Unaffected ANSWER DOWNLOAD EXAMIANS APP
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 circuit element stores energy in the electromagnetic field? Condenser Inductance Variable resistor Resistance Condenser Inductance Variable resistor Resistance 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 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 The resistance of magnetic path ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A moving magnetic field will produce the same effect as a conductor that is moving. False True False True ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following inductor will have the least eddy current losses? Air core Laminated iron core Iron core Powdered iron core Air core Laminated iron core Iron core Powdered iron core ANSWER DOWNLOAD EXAMIANS APP
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