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Electromagnetic Field Theory

Electromagnetic Field Theory
The power gain of a half-wave dipole with respect to an isotropic radiator is

4.15 db
3 db
6 db
2.15 db

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Electromagnetic Field Theory
Electric field strength of charge

 Increase distance.
 Decrease with square distance.
 Increase square distance.
 Decrease with distance.

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Electromagnetic Field Theory
A square corner reflector is used in which of the following?

Radio astronomy
All of these
Point-to-point communication
TV broadcast

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Electromagnetic Field Theory
If the resistance of a conductor does not vary in accordance with the Ohms law it is known as

 non - linear conductor.
 non - conductor.
 bad conductor.
 reverse conductor.

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Electromagnetic Field Theory
The magnitude of the induced emf in a conductor depends upon on the

 amount of flux cut.
 flux density of the magnetic field.
 rate of change of flux linkage.
 amount of flux linkage.

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Electromagnetic Field Theory
In above problem, if the inductance L1 and L2 in series aiding with 30 mH mutual inductance, then total inductance will be

 150 mH.
 100 mH.
 50 mH.
 200 mH.

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MORE MCQ ON Electromagnetic Field Theory

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