Electromagnetic induction An open coil has Infinite resistance and normal inductance Zero resistance and inductance Zero resistance and high inductance Infinite resistance and zero inductance Infinite resistance and normal inductance Zero resistance and inductance Zero resistance and high inductance Infinite resistance and zero inductance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A 200 turn coil has an inductance of 12 mH. If the number of turns is increased to 400 turns, all other quantities (area, length etc.) remaining the same, the inductance will be 12 mH 48 mH 6 mH 24 mH 12 mH 48 mH 6 mH 24 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following circuit elements will oppose the change in circuit current? All of the listed here Capacitance Inductance Resistance All of the listed here Capacitance Inductance Resistance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A laminated iron core has reduced eddy-current losses because The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The magnetic flux is concentrated in the air gap of the core The laminations are insulated from each other The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The magnetic flux is concentrated in the air gap of the core The laminations are insulated from each other 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? 0.1 s 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 ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be Quadrupled Halved Unaffected Doubled Quadrupled Halved Unaffected Doubled ANSWER DOWNLOAD EXAMIANS APP
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