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Electromagnetic Field Theory

Electromagnetic Field Theory
The radiation pattern of a parabola antenna is

Omnidirectional
None of these
A figure of directional
Highly directional

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Electromagnetic Field Theory
A point charge in space is attracted towards a dielectric material because of the

 maximisation of electrostatic flux.
 dielectric hysteresis.
 phenomenon of dielectric polarisation.
 all of above.

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

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

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Electromagnetic Field Theory
Midway between two equal and similar charges, a third equal and similar charge is placed, then this third charge will

 be in unstable equilibrium.
 not be equilibrium.
 will move out of the field of influence of two charges.
 remain in stable equilibrium.

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Electromagnetic Field Theory
Find the strength of the magnetic field when a 2m long conductor is moving with a velocity 4m/s inducing an emf of 20V.

 0.5T.
 5T.
 2.5T.
 10T.

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Electromagnetic Field Theory
A conductor of length L has current I passing through it, when it is placed parallel to strong magnetic field. The force experienced by the conductor will be

 BIL.
 BI2L.
 zero.
 BL2I.

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MORE MCQ ON Electromagnetic Field Theory

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