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Electromagnetic Field Theory

Electromagnetic Field Theory
A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by

 24t.
 4t3.
 12t.
 12t3.

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Electromagnetic Field Theory
The frequency range for satellite communication is

3000 to 30000 MHz
3 to 30 kHz
300 to 3000 kHz
30000 to 300000 MHz

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Electromagnetic Field Theory
Two coupled coils with L1 = L2 = 0.6 H have a coupling coefficient of K = 0.8. The turns ratio N1/N2 is

 4.
 0.5.
 1.
 2.

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Electromagnetic Field Theory
Whenever the magnetic flux changes with respect to an electric conductor or a coil, an EMF is induced in the conductor is Faraday’s

 fourth law
 first law
 second law
 third law

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Electromagnetic Field Theory
The magnetic intensity in A/m at the centre of circular coil of diameter 1m and carrying a current of 2A is

 4.
 2.
 3.
 8.

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Electromagnetic Field Theory
RF inductor are characterized by

 low current rating and high resistance.
 high current rating and high resistance.
 low current rating and low resistance.
 high current rating and low resistance.

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MORE MCQ ON Electromagnetic Field Theory

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