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Microwave Communication

Microwave Communication
Which causes multipath or frequency selective fading?

Small reflector
Further reflector
Nearer reflector
Large reflector

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Microwave Communication
A PPI cathode-ray tube as used on a radar set

Indicates both the range and azimuth of a target
Is used to check the percentage of modulation
Is used for receiver alignment
Indicates only the range of a target

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

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

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Microwave Communication
The main frequency determining element of a klystron is

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

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Microwave Communication
The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m)

S = λR/L
S = 2λR/L
S = λR/RL
S = 3λR/L

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

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MORE MCQ ON Microwave Communication

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