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Electromagnetic Field Theory
An electric field on a place described by its potential V = 20 (r -1 + r-2) where r is the distance from the source. The field is due to
A dipole.
A monopole.
A quardra pole.
Both of A and B.
A dipole.
A monopole.
A quardra pole.
Both of A and B.
Answer
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Related Question
Electromagnetic Field Theory
A square corner reflector is used in
Tv broadcast
Radio astronomy
Point to point communication
All of these
Tv broadcast
Radio astronomy
Point to point communication
All of these
Answer
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Electromagnetic Field Theory
When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0.
Yes
No
Yes
No
Answer
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Electromagnetic Field Theory
Which of the following impedance inversion is obtained?
A quarter wave line
Short-circuited stub
Balun transformer
A half wave line
A quarter wave line
Short-circuited stub
Balun transformer
A half wave line
Answer
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Electromagnetic Field Theory
Which of the following will increase the antenna radiation efficiency?
Use of larger section of conductor
Top loading of antenna
Providing insulation on conductor
Any of the above
Use of larger section of conductor
Top loading of antenna
Providing insulation on conductor
Any of the above
Answer
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Electromagnetic Field Theory
The magnetic field required to reduce the residual magnetism to zero is called
Retentivity.
Coercivity.
Saturation magnetism.
Hysteresis.
Retentivity.
Coercivity.
Saturation magnetism.
Hysteresis.
Answer
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