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Microwave Communication

Microwave Communication
What do you call an attenuation that occurs over many different wavelengths of the carrier?

Rician fading
Wavelength fading
Rayleigh fading
Slow fading

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

Slow fading
Random Doppler shift
Delayed spreading
Rayleigh fading

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Microwave Communication
Oscillators of a klystron tube are maintained

By feedback between the accelerating grid and the repeller
By bunches of electrons passing the cavity grids
By plate-to-cathode feedback
By circulating bunches of electrons within the cavities.

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Microwave Communication
In a pulsed radar set, the function of the duplexer is to

Allow the transmitter and the receiver to operate from a common antenna
Aid in calibrating the display unit
All of these
Prevent frequency drift in the klystron

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Microwave Communication
A magnetron is operated at a duty cycle of 0.001. It has a peak power output of 100 kilo-watts. Its average power is

100 watts
1,000 watts
10,000 watts
1,000,000 watts

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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

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

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MORE MCQ ON Microwave Communication

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