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Microwave Communication

Microwave Communication
Which of the following is used as a high power microwave oscillator?

Magnetron
Thyratron
Klystron
Reflex-klystron

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Microwave Communication
Coupling into and out of a traveling-wave tube can be accompanied by a

All of these
Direct coax-helix match
Cavity match
Waveguide match

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Microwave Communication
It is possible to increase the maximum range of a radar equipment by

Raising the peak power of the transmitter
All of these
Narrowing the beam width and increasing the pulse duration
Lowering the pulse frequency

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Microwave Communication
The maximum usable range of the usual radar set (on any particular range setting) is determined by

The duty cycle
The bandwidth of the receiver IF stages
The width of the transmitted pulses
The interval between transmitted pulses

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Microwave Communication
Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance.

Fifth
Sixth
Third
Fourth

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

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

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MORE MCQ ON Microwave Communication

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