Electromagnetic induction Air-core coils are practically free from Hysteresis losses Eddy current losses Both Hysteresis losses & Eddy current losses None of the listed here Hysteresis losses Eddy current losses Both Hysteresis losses & Eddy current losses None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is 500 ohms 1000 ohms 5000 ohms 100 ohms 500 ohms 1000 ohms 5000 ohms 100 ohms 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 4 A/s 20 A/s 16 A/s 12 A/s 4 A/s 20 A/s 16 A/s 12 A/s ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Lenz's law is a consequence of the law of conservation of Charge Induced e.m.f. Energy Induced current Charge Induced e.m.f. Energy Induced current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following inductor will have the least eddy current losses? Iron core Air core Laminated iron core Powdered iron core Iron core Air core Laminated iron core Powdered iron core ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The direction of induced e.m.f. can be found by 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 Kirchhoff s voltage law ANSWER DOWNLOAD EXAMIANS APP
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