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Electromagnetic Field Theory

Electromagnetic Field Theory
Ohm’s law in point from field theory can be expressed as

 V = IR.
 J = E / σ.
 J = σE.
 R = ρ × ( l / A).

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Electromagnetic Field Theory
Which of the following impedance inversion is obtained?

Balun transformer
Short-circuited stub
A half wave line
A quarter wave line

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Electromagnetic Field Theory
RF inductor are characterized by

 low current rating and high resistance.
 high current rating and low resistance.
 high current rating and high resistance.
 low current rating and low resistance.

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Electromagnetic Field Theory
The attenuation in waveguide above to cut off frequency

Zero
Very high
Infinite
Very low

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Electromagnetic Field Theory
In above question no. 9, the average force on the core to reduce the air gap will be

 1666.22 N.
 6664.8 N.
 832.29 N.
 3332.47 N.

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

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

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MORE MCQ ON Electromagnetic Field Theory

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