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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

300 to 3000 kHz
30000 to 300000 MHz
3 to 30 kHz
3000 to 30000 MHz

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

None of these
Unit vector
Scalar
Vector

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

Narrow bandwidth
Poor directivity
High standing wave ratio
Low directional coupling

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Electromagnetic Field Theory
How much current must flow in a loop of radius 1m to produce a magnetic field of 1 mA/m?

 1.5 mA.
 2.5 mA.
 2 mA.
 1mA.

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Electromagnetic Field Theory
The radiation pattern of loop antenna is

Semicircle
Circle
Elliptical
Cardoid or Limacon

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Electromagnetic Field Theory
A square corner reflector is used in

Tv broadcast
Radio astronomy
All of these
Point to point communication

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MORE MCQ ON Electromagnetic Field Theory

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