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Electromagnetic Field Theory

Electromagnetic Field Theory
Parabolic and lens antenna used at

Microwave frequency
Low frequency
Medium frequency
High frequency

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

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

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Electromagnetic Field Theory
The useful magnetic flux obtainable from any closed surface is

Both A and B
Constant
Unity
None of these

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Electromagnetic Field Theory
A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m

 1440 μN.
  1144 μN.
 144 μN.
 244 μN.

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

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

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Electromagnetic Field Theory
A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The current of 3 A will be

 113.04 µH.
 37.68 mH.
 113.04 mH.
 37.68 µH.

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MORE MCQ ON Electromagnetic Field Theory

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