Microwave Communication What is the purpose of the electromagnetic field which surrounds a traveling-wave tube? To slow down the signal on the helix To accelerate the electron To velocity modulate the electron beam To keep the electrons from spreading out To slow down the signal on the helix To accelerate the electron To velocity modulate the electron beam To keep the electrons from spreading out ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In microwave transmission using digital radio, what causes most intersymbol interference? Slow fading Random Doppler shift Delayed spreading Rayleigh fading Slow fading Random Doppler shift Delayed spreading Rayleigh fading ANSWER DOWNLOAD EXAMIANS APP
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/2 mode π mode π/4 mode 2π mode π/2 mode π mode ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication When used in conjunction with a radar set, the purpose of an echo box is to provide an artificial target. Which may be used to tune the radar receiver To the tone of the pulse repetition Which may be used to tune the radar synchronizer Tune the magnetron to the correct frequency Which may be used to tune the radar receiver To the tone of the pulse repetition Which may be used to tune the radar synchronizer Tune the magnetron to the correct frequency ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Klystron oscillators are most often used in the frequency range of 10 to 10000 MHz 3000 to 30000 MHz 30 to 30000 MHz 300 to 3000 MHz 10 to 10000 MHz 3000 to 30000 MHz 30 to 30000 MHz 300 to 3000 MHz ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Rainfall is an important factor for fading of radio waves at frequencies above 100 GHz 1 GHz 100 MHz 10 GHz 100 GHz 1 GHz 100 MHz 10 GHz ANSWER DOWNLOAD EXAMIANS APP
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