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Microwave Communication

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

RF emitter
Capacitor
Ferrite emitter
Varactor-triac

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

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

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Microwave Communication
A reflex klystron is oscillating at the frequency of its resonant cavity. If the reflector voltage is made slightly less negative, the

Bunching would occur earlier in time
The frequency will decrease
Oscillation will cease
Output power would increase

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

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

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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
A high-power microwave pulse of the order of megawatts can be generated by a

Reflex klystron
Magnetron
Gunn diode
Traveling-wave tube

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MORE MCQ ON Microwave Communication

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