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Microwave Communication

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

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

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Microwave Communication
In microwave transmission using digital radio, what causes most intersymbol interference?

Delayed spreading
Slow fading
Rayleigh fading
Random Doppler shift

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Microwave Communication
Which of the following is used as an oscillator device in the SHF band?

Klystron tube
Both B and C
Thyratron tube
Tunnel diode

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Microwave Communication
Which of the following operating frequencies is used for the modern loran navigational system?

Loran B: 900 kHz
Loran A: 1950 kHz
Loran C: 100 kHz
Loran D: 10.2 kHz

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Microwave Communication
If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the

π/4 mode
2π mode
π mode
π/2 mode

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Microwave Communication
Which causes multipath or frequency selective fading?

Further reflector
Nearer reflector
Large reflector
Small reflector

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MORE MCQ ON Microwave Communication

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