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 36 mH 30 mH 48 mH 38 mH 36 mH 30 mH 48 mH 38 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is 15 H 10 H 20 H 5 H 15 H 10 H 20 H 5 H 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 More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The laminations are stacked vertically The magnetic flux is concentrated in the air gap of the core More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The laminations are stacked vertically ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following is unit of inductance? Ohm Hennry Ampere turns Weber/metre Ohm Hennry Ampere turns Weber/metre 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? 0.2 s 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 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 9 H 10 H 12 H 6 H 9 H 10 H 12 H 6 H ANSWER DOWNLOAD EXAMIANS APP
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