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Electromagnetic Field Theory
In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as
None of these
Front to back ratio
Transmission efficiency
Loss coefficient
None of these
Front to back ratio
Transmission efficiency
Loss coefficient
Answer
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Related Question
Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is
none of tha above.
infinite.
finite.
zero.
none of tha above.
infinite.
finite.
zero.
Answer
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Electromagnetic Field Theory
The main disadvantage of the two-hole directional coupler is
High standing wave ratio
Poor directivity
Low directional coupling
Narrow bandwidth
High standing wave ratio
Poor directivity
Low directional coupling
Narrow bandwidth
Answer
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Electromagnetic Field Theory
Find the length of a conductor which is moving with a velocity 0.4m/s in a magnetic field of 8T, inducing an emf of 20V.
0.5m.
6.25m.
5.25m.
0.6m.
0.5m.
6.25m.
5.25m.
0.6m.
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
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 quardra pole.
A monopole.
A dipole.
Both of A and B.
A quardra pole.
A monopole.
A dipole.
Both of A and B.
Answer
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