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Microwave Communication

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

SONAR
Fathometer
LORAN
Echosounder

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Microwave Communication
In a radar-set receiver, the usual mixer stage is

A Rochelle salts crystal
A tunnel diode
And FET
A silicon crystal

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Microwave Communication
Which causes multipath or frequency selective fading?

Small reflector
Further reflector
Nearer reflector
Large reflector

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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

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

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Microwave Communication
A reflex klystron is oscillating at the frequency of its resonant cavity. If the reflector voltage is made slightly less negative, the

Bunching would occur earlier in time
The frequency will decrease
Oscillation will cease
Output power would increase

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Microwave Communication
Which of the following operating frequencies is used for the modern loran navigational system?

Loran D: 10.2 kHz
Loran C: 100 kHz
Loran A: 1950 kHz
Loran B: 900 kHz

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MORE MCQ ON Microwave Communication

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