Electromagnetic induction Which of the following is unit of inductance? Ohm Ampere turns Hennry Weber/metre Ohm Ampere turns Hennry Weber/metre 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 be 3 mH 24 mH 12 mH 48 mH 3 mH 24 mH 12 mH 48 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The inductance of a coil will increase under all the following conditions except When more length for the same number of turns is provided When more area for each turn is provided When permeability of the core increases When the number of turns of the coil increase When more length for the same number of turns is provided When more area for each turn is provided When permeability of the core increases When the number of turns of the coil increase 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 Newton Faraday Lenz Coulomb Newton Faraday Lenz Coulomb ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Reversing the field or the current will reverse the force on the conductor. Yes No Yes No 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
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