Electromagnetic induction Two coils have inductances of 8 mH and 18 mH and a coefficient of coupling of 0.5. If the two coils are connected in series aiding, the total inductance will be 48 mH 36 mH 38 mH 30 mH 48 mH 36 mH 38 mH 30 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Higher the self-inductance of a coil, Lesser its weber-turns Longer the delay in establishing steady current through it Greater the flux produced by it Lower the e.m.f. induced Lesser its weber-turns Longer the delay in establishing steady current through it Greater the flux produced by it Lower the e.m.f. induced ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following is unit of inductance? Ampere turns Weber/metre Hennry Ohm Ampere turns Weber/metre Hennry Ohm ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A laminated iron core has reduced eddy-current losses because More wire can be used with less D.C. resistance in coil The laminations are stacked vertically The magnetic flux is concentrated in the air gap of the core The laminations are insulated from each other More wire can be used with less D.C. resistance in coil The laminations are stacked vertically 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 An open coil has 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 Infinite resistance and normal inductance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be 6 H 9 H 10 H 12 H 6 H 9 H 10 H 12 H ANSWER DOWNLOAD EXAMIANS APP
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