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Electromagnetic Field Theory

Electromagnetic Field Theory
A loop antenna is a commonly used for

Satellite communication
Radar
All of these
Direction finding

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

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

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Electromagnetic Field Theory
Which antenna is a wideband antenna?

Marconi antenna
Hertz antenna
Folded dipole
None of these

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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

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

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Electromagnetic Field Theory
A magnetic material has a total flux B of 80 micro Wb with an mmf of 160 AT. The reluctance in ampere turn per weber is

 2 × 106.
 2 × 10-6.
 2 × 108.
 2 × 10-8.

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Electromagnetic Field Theory
The energy stored in the magnetic field in a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying a current at 10 amp, is

 0.015 joule.
 0.015 joule.
 1.15 joule.
 0.15 joule.

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MORE MCQ ON Electromagnetic Field Theory

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