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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

2π mode
π mode
π/2 mode
π/4 mode

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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?

Simplex
Isolator
Magnetron
Circulator

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

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

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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
Isolator
Circulator
Wave trap

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

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

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Microwave Communication
In an SHF pulsed radar set, a reflex klystron can be used as a

Local oscillator
Duplexer stage
Transmitter oscillator
Single mixer stage

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MORE MCQ ON Microwave Communication

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