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Electromagnetic Field Theory

Electromagnetic Field Theory
The main disadvantage of the two-hole directional coupler is

Poor directivity
Narrow bandwidth
Low directional coupling
High standing wave ratio

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Electromagnetic Field Theory
An electric field of 1.92 × 103 N/C is maintained across two plates separated by 0.015 m. Potential difference across plates will be

 14.40 V.
 2.88 V.
 1.4 V.
 28.8 V.

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Electromagnetic Field Theory
A charge which when placed in vacuum from an equal and similar charge repels with a force of 9 × 103 N, is known as

 pico - coulomb.
 micro - coulomb.
 coulomb.
 milli - coulomb.

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Electromagnetic Field Theory
The shape of B-H curve for air gap is

 straight line.
 hyperbola.
 ellipse.
 parabola.

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Electromagnetic Field Theory
The minimum height of outer atmosphere is

400 km
200 km
100 km
150 km

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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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MORE MCQ ON Electromagnetic Field Theory

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