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Electromagnetic Field Theory

Electromagnetic Field Theory
In a lossless medium the intrinsic impedance η = 60π and μr = 1. The relative dielectric constant εr shall be

 8.
 2.
 4.
 1.

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Electromagnetic Field Theory
A loop is rotating about x-axis in a magnetic field, B = BO cos(ω + φ) ay. The voltage in the loop is

 Due to transformer only.
 Due to both rotating and transformer action.
 Zero.
 Due to rotating only.

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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.
None of these
 rotor rotation.
 induced emf.

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Electromagnetic Field Theory
Magnetic current is composed of which of the following?

 Only displacement current.
 Only conduction current.
 Both conduction and displacement current.
None of these

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Electromagnetic Field Theory
The force experienced by a current carrying conductor lying parallel to a magnetic field is

 zero.
 BIL.
 Bil cosθ.
 Bil sinθ.

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

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

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