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Electromagnetic Field Theory

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

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

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Electromagnetic Field Theory
A coil of 300 turns is wound on a non magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The inductance of the coil corresponding to a magnetizing current of 6 A will be

 37.68 μH.
  113.04 μH.
 1.1304 μH.
 3.768 μH.

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Electromagnetic Field Theory
Which of the following is multiband HF receiving antenna?

Conical horn
Log-periodic
Square loop
Folded dipole

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

 5 mH.
 10 mH.
 15 mH.
 20 mH.

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Electromagnetic Field Theory
The divergence of a vector is a scalar, while the curl of a vector is another

Scalar
Unit vector
Vector
None of these

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Electromagnetic Field Theory
The coils having self inductance of 10 mH and 15 mH have an effective inductance of 40 mH, when connected in series aiding. What will be the equivalent inductance if we connect then in series opposing?

  10 mH.
 20 mH.
 5 mH.
 0 mH.

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