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Electromagnetic Field Theory
Which of the following will increase the antenna radiation efficiency?
Providing insulation on conductor
Top loading of antenna
Use of larger section of conductor
Any of the above
Providing insulation on conductor
Top loading of antenna
Use of larger section of conductor
Any of the above
Answer
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Related Question
Electromagnetic Field Theory
Two straight parallel conductors carry equal currents in opposite direction. The force between them is
attractive.
repulsive.
zero.
none of above.
attractive.
repulsive.
zero.
none of above.
Answer
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Electromagnetic Field Theory
If the static magnetic flux density is B, then
Curl of B = 0.
Curl of B = J.
Divergence of B = 0.
Divergence of B = J.
Curl of B = 0.
Curl of B = J.
Divergence of B = 0.
Divergence of B = J.
Answer
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Electromagnetic Field Theory
Which of the following impedance inversion is obtained?
A quarter wave line
Balun transformer
A half wave line
Short-circuited stub
A quarter wave line
Balun transformer
A half wave line
Short-circuited stub
Answer
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Electromagnetic Field Theory
Skin depth is proportional to
Frequency.
√(σ).
1/√σ.
Permeability.
Frequency.
√(σ).
1/√σ.
Permeability.
Answer
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Electromagnetic Field Theory
A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that
the inductor is non linear.
the above statement is false.
the inductor has ferrite core.
the inductor is made of thin wire.
the inductor is non linear.
the above statement is false.
the inductor has ferrite core.
the inductor is made of thin wire.
Answer
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