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Electromagnetic Field Theory

Electromagnetic Field Theory
The principle of dynamically induced emf is utilized in a

 transformer.
 thermocouple.
 choke.
 generator.

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Electromagnetic Field Theory
A long straight wire carries a current I = 10A. At what distance is the magnetic field H = 1A/m?

 1.19 m.
 1.39 m.
 1.29 m.
 1.59 m.

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Electromagnetic Field Theory
For a linear electromagnetic circuit, which of the following statement is true?

 Field energy is equal to the co-energy.
 Field energy is greater than the co-energy.
 Field energy is lesser than the co-energy.
 Co-energy is zero.

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Electromagnetic Field Theory
Two coupled coils with L1 = L2 = 0.6 H have a coupling coefficient of K = 0.8. The turns ratio N1/N2 is

 0.5.
 1.
 4.
 2.

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Electromagnetic Field Theory
If E is the electric field intensity, then what is the value of divergence of (curl of E)?

 Null vector.
 E.
 Zero.
 | E |.

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Electromagnetic Field Theory
The virtual height of an ionospheric layer is __________ true height

Less than
Equal to
No relation
Higher than

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MORE MCQ ON Electromagnetic Field Theory

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