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Microwave Communication

Microwave Communication
Which of the following is used as an oscillator device in the SHF band?

Tunnel diode
Thyratron tube
Both B and C
Klystron tube

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

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

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

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

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Microwave Communication
A Class-S Emergency Position-Indicating Radio Beacon (E.P.I.R.B)

All of these
May be tested during the first five minutes of any hour
Must have its battery replaced after emergency use
Must be capable of floating or being secured to a survival

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Microwave Communication
The aquadag coating on the inside of PPI tube is used

To focus the beam of primary electrons
As a second anode and to prevent the build-up of secondary field
All of these
To shield the electron beam from unidirectional magnetic

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Microwave Communication
The frequency of the oscillation generated by a magnetron, is mainly determined by

The number of the cavity resonators
The ratio of the dc cathode voltage to the magnetic flux density
The dimension of each cavity resonator
The flux density of the external magnet

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MORE MCQ ON Microwave Communication

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