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Electromagnetic Field Theory

Electromagnetic Field Theory
The power gain of a half-wave dipole with respect to an isotropic radiator is

2.15 db
6 db
4.15 db
3 db

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Electromagnetic Field Theory
A square corner reflector is used in which of the following?

TV broadcast
Radio astronomy
All of these
Point-to-point communication

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Electromagnetic Field Theory
Electric field inside a hollow metallic charged sphere is

 increasing towards centre.
 decreasing towards centre.
 zero.
 none of above.

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Electromagnetic Field Theory
1 Tesla =

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

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Electromagnetic Field Theory
In an inductor current cannot change abruptly. Comment on the statement.

 False.
 True.
 True partially.
 Cannot comment.

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Electromagnetic Field Theory
Two coils have inductances L1 = 1200 mH and L2 = 800 mH. They are connected in such a way that flux in the two coils aid each other and inductance is measured to be 2500 mH, then Mutual inductance between the coils is ___________ mH.

 145.
 225.
 150.
 250.

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MORE MCQ ON Electromagnetic Field Theory

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