Exercise: Electromagnetic Field Theory

Questions for: Electromagnetic Field Theory

Which of the following term does not apply to the Yagi-Uda array?
A:
High gain
B:
Folded dipole
C:
Parasitic
D:
Good bandwidth
Answer: A
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A transmission line has characteristics impedance of (75 + j 0.01) Ω and is terminated in a load impedance of (70 + j 50) Ω. The reflection coefficient will be
A:
0.08 + j 0.32
B:
0.32 + j 1.38
C:
0.70 - j 2.97
D:
1.1 + j 0.32
Answer: A
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Broadcasting antennas are generally
A:
omnidirectional type
B:
vertical type
C:
horizontal type
D:
helical
Answer: B
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Microwave signals follow the curvature of the earth and the phenomenon
A:
tropospheric scatter
B:
faraday effect
C:
duct propagation
D:
none
Answer: C
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A unipole is also known as
A:
omnidirectional radiator
B:
unidirectional radiator
C:
line radiator
D:
none of the above
Answer: A
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