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Electromagnetic Field Theory

Electromagnetic Field Theory
The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper cable of 60 mm diameter is

 32 mH.
 3.2 µH.
 3.2 H.
 3.2 mH.

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Electromagnetic Field Theory
The operation of electric generators and motors depend on the intraction between magnetic field and

  Electric current.
 Electric fields.
 Commutator.
 Copper conductors.

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Electromagnetic Field Theory
The main purpose of choke is

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

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Electromagnetic Field Theory
Find H for centre of solenoid having finite length d = 1 unit where N = no of turns = 500, I = 2 A.

 500.
 1000.
 None of these.
 100.

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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 / 6ε.
 Q / 6.
 Q / 4π.
 4πQ / 6ε.

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Electromagnetic Field Theory
A pure inductor is connected across a voltage source. Find the active power drawn by the inductor?

 maximum
None of these
 either 1 or 2
 0

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MORE MCQ ON Electromagnetic Field Theory

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