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Microwave Communication
Which of the following permits a microwave signal to travel in one direction with virtually no loss, but severely attenuates any signal attempting to travel in the reverse direction?
Tunnel diode
Circulator
Isolator
Wave trap
Tunnel diode
Circulator
Isolator
Wave trap
Answer
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Related Question
Microwave Communication
A shipboard equipment which measures the distance between the ship’s bottom and the ocean floor.
Fathometer
LORAN
SONAR
Echosounder
Fathometer
LORAN
SONAR
Echosounder
Answer
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Microwave Communication
Which of the following is used as a high power microwave oscillator?
Thyratron
Reflex-klystron
Magnetron
Klystron
Thyratron
Reflex-klystron
Magnetron
Klystron
Answer
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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
The shortest possible time
The restricted high-frequency response
A long time constant
Low-pass filters
The shortest possible time
The restricted high-frequency response
A long time constant
Answer
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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 A: 1950 kHz
Loran B: 900 kHz
Loran C: 100 kHz
Loran D: 10.2 kHz
Loran A: 1950 kHz
Loran B: 900 kHz
Loran C: 100 kHz
Answer
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Microwave Communication
When used in conjunction with a radar set, the purpose of an echo box is to provide an artificial target.
Tune the magnetron to the correct frequency
Which may be used to tune the radar synchronizer
To the tone of the pulse repetition
Which may be used to tune the radar receiver
Tune the magnetron to the correct frequency
Which may be used to tune the radar synchronizer
To the tone of the pulse repetition
Which may be used to tune the radar receiver
Answer
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