MICROWAVE COMMUNICATION QUIZ

Must remain as before

Must be increased

Must be doubled

May be decreased

6370 mi

6370 km

8493 km

8493 mmi

And FET

A Rochelle salts crystal

A silicon crystal

A tunnel diode

Which may be used to tune the radar synchronizer

To the tone of the pulse repetition

Which may be used to tune the radar receiver

Tune the magnetron to the correct frequency

Varying the repeller voltage

An adjustment in the synchronizer

Adjusting the flexible wall of the resonant cavity

The AFC system

All of these

Aid in calibrating the display unit

Prevent frequency drift in the klystron

Allow the transmitter and the receiver to operate from a common antenna

Random Doppler shift

Delayed spreading

Rayleigh fading

Slow fading

π mode

π/2 mode

2π mode

π/4 mode

To slow down the signal on the helix

To accelerate the electron

To keep the electrons from spreading out

To velocity modulate the electron beam

To shield the electron beam from unidirectional magnetic

To focus the beam of primary electrons

All of these

As a second anode and to prevent the build-up of secondary field