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Microwave Communication

Microwave Communication
If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the

π/2 mode
2π mode
π/4 mode
π mode

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Microwave Communication
A PPI cathode-ray tube as used on a radar set

Indicates both the range and azimuth of a target
Is used to check the percentage of modulation
Indicates only the range of a target
Is used for receiver alignment

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Microwave Communication
Rainfall is an important factor for fading of radio waves at frequencies above

100 MHz
1 GHz
100 GHz
10 GHz

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Microwave Communication
What is the purpose of the electromagnetic field which surrounds a traveling-wave tube?

To keep the electrons from spreading out
To velocity modulate the electron beam
To accelerate the electron
To slow down the signal on the helix

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Microwave Communication
What ferrite device can be used instead of duplexer of isolate microwave transmitter and receiver when both are connected to the same antenna?

Circulator
Magnetron
Simplex
Isolator

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Microwave Communication
It is possible to increase the maximum range of a radar equipment by

All of these
Narrowing the beam width and increasing the pulse duration
Raising the peak power of the transmitter
Lowering the pulse frequency

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MORE MCQ ON Microwave Communication

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