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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

300 to 3000 kHz
3 to 30 kHz
30000 to 300000 MHz
3000 to 30000 MHz

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Electromagnetic Field Theory
XEROX machine is working on

 electrostatic effect.
 peltier effect.
 magnetic effect.
 heating effect of current.

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Electromagnetic Field Theory
Tropospheric scatter is used with frequencies in the

UHF
HF
VHF
VLF

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Electromagnetic Field Theory
Which of the following will increase the antenna radiation efficiency?

Any of the above
Providing insulation on conductor
Top loading of antenna
Use of larger section of conductor

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Electromagnetic Field Theory
A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m

  1144 μN.
 244 μN.
 144 μN.
 1440 μN.

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Electromagnetic Field Theory
How much current must flow in a loop of radius 1m to produce a magnetic field of 1 mA/m?

 1.5 mA.
 2.5 mA.
 1mA.
 2 mA.

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MORE MCQ ON Electromagnetic Field Theory

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