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Microwave Communication

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

100 GHz
10 GHz
100 MHz
1 GHz

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Microwave Communication
Calculate the effective earth’s radius if the surface refractivity is 301.

8493 km
6370 km
8493 mmi
6370 mi

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Microwave Communication
What allow microwave to pass in only one direction?

Varactor-triac
Capacitor
RF emitter
Ferrite emitter

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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
No noticeable effect
A decrease in range
A decrease in gain

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Microwave Communication
At what position is the input signal inserted into a traveling-wave tube?

At the collector
At the cathode end of the helix
At the control grid of the electron gun
At the collector end of the helix

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Microwave Communication
The main frequency determining element of a klystron is

The repeller voltage
The accelerating voltage
Its mode of operation
Its resonant cavity

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MORE MCQ ON Microwave Communication

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