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Electromagnetic Field Theory

Electromagnetic Field Theory
A waveguide operated below cut off frequency can be used as

An isolator
None
An attenuator
Phase shifter

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

Log-periodic
Square loop
Conical horn
Folded dipole

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Electromagnetic Field Theory
XEROX machine is working on

 heating effect of current.
 electrostatic effect.
 peltier effect.
 magnetic effect.

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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 potential that appears at a point in space due to the current which caused it is called potential

Lagging the current
Retardation
Accelerating
Oscillating

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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

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

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MORE MCQ ON Electromagnetic Field Theory

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