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Microwave Communication

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

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

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

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

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Microwave Communication
Which causes multipath or frequency selective fading?

Small reflector
Large reflector
Further reflector
Nearer reflector

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

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

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Microwave Communication
Rainfall is an important factor for fading of radio waves at frequencies above

10 GHz
1 GHz
100 MHz
100 GHz

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Microwave Communication
A traveling-wave tube (TWT) amplifies by virtue of

The energy contained the cavity resonators
The absorption of energy by the signal from an electron stream
The energy liberated form the collector
The effect of an external magnetic field

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MORE MCQ ON Microwave Communication

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