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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

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

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Electromagnetic Field Theory
Voltage applied across a dielectric produces an electrostatic field 50 times greater than air. The dielectric constant of the dielectric will be

 20.
 10.
 5.
 50.

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Electromagnetic Field Theory
Which of following is the unit of inductance?

 Ohm.
  Ampere turns.
  Milli- henry.
  Webers / m.

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Electromagnetic Field Theory
inductance (L2) in parallel without mutual coupling will be

 20 mH.
 10 mH.
 5 mH.
 15 mH.

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Electromagnetic Field Theory
A wire 1 m long carries a current of 5A and is at an angle of 30o with B = 1.5 wb/m2. Magnitude of force is

 5 N.
 2 N.
 2.5 N.
 3.75 N.

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Electromagnetic Field Theory
A plane wave magnetic field is represented by Bx = cos(y – ct). The electric and magnetic fields will be zero in the direction

 Ey = Ez = 0, By = Bz = 0.
 Ex = Ey = 0, Bx = By = 0.
 Ex = Ey = 0, By = Bz = 0.
 None of these.

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MORE MCQ ON Electromagnetic Field Theory

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