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Electromagnetic Field Theory

Electromagnetic Field Theory
A square corner reflector is used in

Tv broadcast
Point to point communication
Radio astronomy
All of these

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Electromagnetic Field Theory
Electric flux in coulombs emanating from any surface of a cube containing C coulombs of charge at its centre is

 Q / 6.
 Q / 6ε.
 4πQ / 6ε.
 Q / 4π.

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Electromagnetic Field Theory
A circular loop has its radius increasing at a rate of 2 m/s. The loop placed perpendicular to a constant magnetic field of 0.5 wb/m2. When the radius of the loop is 4 m. the emf induced in the will be

 8 π V.
 Zero.
 0.4 π V.
 0.8 π V.

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Electromagnetic Field Theory
Which of the following impedance inversion is obtained?

Balun transformer
Short-circuited stub
A quarter wave line
A half wave line

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Electromagnetic Field Theory
If in a 1 mF capacitor, an instantaneous displacement current of 1 A is to be established in the spaces between its plates then it is possible by applying

 106 volts.
 106 volts/sec.
 106 Amp/sec.
 106 Amp.

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Electromagnetic Field Theory
1 Tesla =

 1 wb/ m2.
 1 wb .
 1 wb- m2.
 1 wb/m.

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MORE MCQ ON Electromagnetic Field Theory

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