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Electromagnetic Field Theory

Electromagnetic Field Theory
The ability of charged bodies to exert force on one another is attributed to the existence of

 electric field.
 protons.
 neutrons.
 electrons.

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Electromagnetic Field Theory
A pure inductor is connected across a voltage source. Find the active power drawn by the inductor?

 maximum
 0
None of these
 either 1 or 2

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Electromagnetic Field Theory
Which of the following is multiband HF receiving antenna?

Folded dipole
Log-periodic
Conical horn
Square loop

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Electromagnetic Field Theory
A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that

 the inductor is non linear.
 the inductor has ferrite core.
 the above statement is false.
 the inductor is made of thin wire.

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Electromagnetic Field Theory
Parabolic and lens antenna used at

Medium frequency
Low frequency
Microwave frequency
High frequency

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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

 second law
 third law
 fourth law
 first law

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