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Microwave Communication

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

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

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

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

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

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

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Microwave Communication
A thin layer of dirt and grime coverts the reflecting surface of the parabolic dish of a radar set. The particular effect on the performance of the radar will be

No noticeable effect
A decrease in gain
A reduction in horizontal resolution
A decrease in range

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

Duplexer stage
Single mixer stage
Local oscillator
Transmitter oscillator

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Microwave Communication
Which of the reception problems below that is not due to multipath?

Delayed spreading
Slow fading
Random Doppler shift
Rayleigh fading

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MORE MCQ ON Microwave Communication

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