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Electromagnetic Field Theory

Electromagnetic Field Theory
It is best to use for coupling a coaxial line to a parallel wire transmission line.

Balun
Directional Coupler
Slotted line
Tee

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Electromagnetic Field Theory
The heating time constant of an electrical machine gives an indication of its

 overload capacity.
 rating.
 short time rating.
 cooling.

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Electromagnetic Field Theory
In case of all flux from the current in coil 1 links with coil 2, the coefficient of coupling will be

 2.0.
 0.5.
 Zero.
 1.0.

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Electromagnetic Field Theory
Mutual inductance between two magnetically coupled coils depends on

 cross sectional area of their common core.
 all of above.
 permeability of core.
 the number of their turns.

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Electromagnetic Field Theory
If the static magnetic flux density is B, then

 Curl of B = J.
 Curl of B = 0.
 Divergence of B = J.
  Divergence of B = 0.

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Electromagnetic Field Theory
Which of following is the unit of inductance?

 Ohm.
  Webers / m.
  Ampere turns.
  Milli- henry.

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MORE MCQ ON Electromagnetic Field Theory

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