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Electromagnetic Field Theory
A magnetic vector potential is given by the expression A = (- cos x) (cos y) uz. The flux density at the origin is
2 ux.
0.
– 2 ux.
– uy.
2 ux.
0.
– 2 ux.
– uy.
Answer
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Related Question
Electromagnetic Field Theory
It was suggested by _____________ that the electric field should be imagined to be divided into tubes of force containing a fixed number of line of force
Faraday.
Kelvin.
Newton.
all of above.
Faraday.
Kelvin.
Newton.
all of above.
Answer
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Electromagnetic Field Theory
The main purpose of choke is
to pass low frequencies.
none of above.
to pass high frequencies.
to block low frequencies.
to pass low frequencies.
none of above.
to pass high frequencies.
to block low frequencies.
Answer
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Electromagnetic Field Theory
In a lossless medium the intrinsic impedance η = 60π and μr = 1. The relative dielectric constant εr shall be
8.
1.
4.
2.
8.
1.
4.
2.
Answer
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Electromagnetic Field Theory
Tropospheric scatter propagation is not subject to any fading.
False
True
False
True
Answer
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Electromagnetic Field Theory
When a current carrying conductor is brought into magnetic field, the force that moves the conductor depends upon
The weight of the conductor
The value of current
The direction of the conductor
None of these
The weight of the conductor
The value of current
The direction of the conductor
None of these
Answer
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