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Electromagnetic Field Theory

Electromagnetic Field Theory
Fleming's right hand rule may be applied to an electric generator to find out the direction of

None of these
 rotor rotation.
 magnetic field.
 induced emf.

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Electromagnetic Field Theory
Which of the following represents ohms law

 V = RI
 J = σE
 I = GV
All of these

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Electromagnetic Field Theory
The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then

 none of these.
 transformer is an ideal transformer.
 turns ratio of the transformer is also two.
 it is a perfect transformer.

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Electromagnetic Field Theory
Coulombs law for the force between electric charges most closely resembles with

 Law of conservation of energy.
 Newtons law of motion.
 Gauss theorem.
 Newtons law of gravitation.

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Electromagnetic Field Theory
A circular loop has its radius increasing at a rate of 2 m/s. The loop placed perpendicular to a constant magnetic field of 0.5 wb/m2. When the radius of the loop is 4 m. the emf induced in the will be

 0.8 π V.
 0.4 π V.
 Zero.
 8 π V.

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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

 12t.
 24t.
 12t3.
 4t3.

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