Electromagnetic induction The inductance of a coil will increase under all the following conditions except When the number of turns of the coil increase When permeability of the core increases When more length for the same number of turns is provided When more area for each turn is provided When the number of turns of the coil increase When permeability of the core increases When more length for the same number of turns is provided When more area for each turn is provided ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will 12 mH 3 mH 28 mH 24 mH 12 mH 3 mH 28 mH 24 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The polarity of the induced voltage can be determined by using the left-hand generator rule. No Yes No Yes 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 The direction of induced e.m.f. can be found by Kirchhoff s voltage law Fleming's right hand rule Laplace's law Lenz's law Kirchhoff s voltage law Fleming's right hand rule Laplace's law Lenz's law ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following circuit elements will oppose the change in circuit current? Capacitance Resistance All of the listed here Inductance Capacitance Resistance All of the listed here Inductance ANSWER DOWNLOAD EXAMIANS APP
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