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Electromagnetic Field Theory
Electromagnetic Field Theory
Exercise: Electromagnetic Field Theory
📂 Electromagnetic Field Theory
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Questions for: Electromagnetic Field Theory
The critical frequency of 'F' layer is greater than 30 MHz.
A:
True
B:
False
C:
D:
Answer:
B
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Conductivity is measured in terms of
A:
mho/metre
B:
ohm/metre
C:
mho/metre
2
D:
ohm/metre
2
Answer:
A
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A satellite that simply reflect back the signals from one region of the earth to the other region is known as
A:
orbiting satellite
B:
geostationary satellite
C:
active satellite
D:
passive satellite
Answer:
D
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In an home T.V. receiver, the leed in from the antenna is
A:
coaxial cable of 75 Ω
B:
ordinary twisted wire
C:
bar copper wire
D:
twin wire
Answer:
D
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The transmitting antennas for lower frequencies (below 500 kHz) are generally
A:
vertical grounded wire type
B:
horizontal suspended wire type
C:
parabolic reflector type
D:
any of the above
Answer:
A
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