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Electromagnetic Field Theory

Electromagnetic Field Theory
For an inductor, current is proportional to

 both (A) and (B).
 voltage across the inductor.
 none of them.
 magnetic field.

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Electromagnetic Field Theory
Cork Screw rule is used to find

 direction of current.
 direction of electric field.
 direction of magnetic field.
 direction of emf.

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Electromagnetic Field Theory
Which antenna is a wideband antenna?

None of these
Folded dipole
Marconi antenna
Hertz antenna

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Electromagnetic Field Theory
The core of coil length is 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.
 3 mH.
 12 mH.
 24 mH.

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Electromagnetic Field Theory
Self inductance of magnetic coil is proportional to

 1 / N.
 N2.
 N.
 1 / N2.

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Electromagnetic Field Theory
Which of the following impedance inversion is obtained?

A half wave line
Balun transformer
A quarter wave line
Short-circuited stub

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MORE MCQ ON Electromagnetic Field Theory

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