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Electromagnetic Field Theory

Electromagnetic Field Theory
1 Maxwell is the same as

 10-4 weber.
 104 weber.
 10-8 weber.
 10-8 weber.

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Electromagnetic Field Theory
The hysteresis loop of a magnetic material has an area of 5 cm2 with the scale given as 1 cm = 2 AT and 1 cm = 50 mwb At 50 Hz; the total hysteresis loss is

 15 W.
 50 W.
 20 W.
  25 W.

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Electromagnetic Field Theory
Unit of electric flux density is

 weber / meter2.
 coulomb.
 coulomb / meter2.
 farad / meter.

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Electromagnetic Field Theory
The radiation pattern of Hertzian dipole in the plane perpendicular to dipole is a

Figure of eight
None of these
Circle
Null

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Electromagnetic Field Theory
A Yagi antenna has a driven antenna

With a reflector
With a reflector and one or more directors
With one or more directors
Only

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Electromagnetic Field Theory
The main purpose of choke is

 none of above.
  to pass low frequencies.
 to block low frequencies.
 to pass high frequencies.

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