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Electromagnetic Field Theory

Electromagnetic Field Theory
Two straight parallel conductors carry equal currents in opposite direction. The force between them is

 zero.
 repulsive.
 none of above.
 attractive.

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Electromagnetic Field Theory
It is best to use for coupling a coaxial line to a parallel wire transmission line.

Tee
Directional Coupler
Slotted line
Balun

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Electromagnetic Field Theory
In above problem, if the inductance L1 and L2 in series aiding with 30 mH mutual inductance, then total inductance will be

 100 mH.
 150 mH.
 200 mH.
 50 mH.

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Electromagnetic Field Theory
The Biot-savarts law is a general modification of

 Faradays law.
 Kirchhoffs law.
 Amperes law.
 Lenzs law.

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Electromagnetic Field Theory
An emf of 16 volts is induced in a coil of inductance 4 H. The rate of change of current must be

 64 A / s.
 4 A / s.
 32 A / s.
 16 A / s.

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Electromagnetic Field Theory
For a line characteristic impedance zo terminated is load zo/3, the reflection coefficient is

  – ½.
 – 1/3.
 2/3.
 1/3.

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MORE MCQ ON Electromagnetic Field Theory

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