Electromagnetic induction Air-core coils are practically free from Eddy current losses None of the listed here Both Hysteresis losses & Eddy current losses Hysteresis losses Eddy current losses None of the listed here Both Hysteresis losses & Eddy current losses Hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction An open coil has Infinite resistance and zero inductance Zero resistance and inductance Zero resistance and high inductance Infinite resistance and normal inductance Infinite resistance and zero inductance Zero resistance and inductance Zero resistance and high inductance Infinite resistance and normal inductance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction An average voltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is 0.02 wb 20 wb 0.2 wb 2 wb 0.02 wb 20 wb 0.2 wb 2 wb ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction In case of an inductance, current is proportional to Voltage across the inductance None of the listed here Magnetic field Both of the listed here Voltage across the inductance None of the listed here Magnetic field Both of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction An e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be 16 A/s 4 A/s 12 A/s 20 A/s 16 A/s 4 A/s 12 A/s 20 A/s 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 48 mH 12 mH 24 mH 3 mH 48 mH 12 mH 24 mH 3 mH ANSWER DOWNLOAD EXAMIANS APP
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