Exercise: Electromagnetic Field Theory

Questions for: Electromagnetic Field Theory

For a distortionless line, the parameters are related as
A:
R/G = L/C
B:
R/L = 1
C:
R/G = C/L
D:
RG = LC
Answer: A
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Which of following antenna does not depend upon the frequency?
A:
Log-periodic
B:
Parabolic
C:
Conical
D:
All of the above
Answer: A
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In broadside array
A:
the principle direction radiation is perpendicular to the array axis and also to the plane containing the array elements
B:
the principle direction radiation is parallel to the array axis and also to the plane containing the array elements
C:
the principle direction radiation is parallel to the array axis and perpendicular to the plane containing the array elements
D:
the principle direction radiation is perpendicular to the array axis and parallel to the plane containing the array elements
Answer: A
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The total electrical energy emitted overall space from an electron of charge e and radius r is
A:
e/ε0r2
B:
e2/ε0r
C:
e2/4pε0r2
D:
e2/8pε0r
Answer: D
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When the magnetic vector is parallel to the boundary surface and electric vector is parallel to the place of incidence, the polarization is
A:
zero
B:
vertical
C:
perpendicular
D:
horizontal
Answer: B
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