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Microwave Communication

Microwave Communication
A shipboard equipment which measures the distance between the ship’s bottom and the ocean floor.

Echosounder
SONAR
Fathometer
LORAN

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

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

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Microwave Communication
Klystron oscillators are most often used in the frequency range of

300 to 3000 MHz
30 to 30000 MHz
10 to 10000 MHz
3000 to 30000 MHz

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Microwave Communication
If k-factor is greater than 1, the array beam is bent

Towards the earth
Towards the ionosphere,
Towards the outer space
Away from the earth

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Microwave Communication
When it is desired that short-range targets be clearly seen on a pulsed-radar set, it is important that the receiver and display system have

Low-pass filters
A long time constant
The shortest possible time
The restricted high-frequency response

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Microwave Communication
Which causes multipath or frequency selective fading?

Nearer reflector
Large reflector
Further reflector
Small reflector

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MORE MCQ ON Microwave Communication

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