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 keep the electrons from spreading out To velocity modulate the electron beam To accelerate the electron To slow down the signal on the helix To keep the electrons from spreading out To velocity modulate the electron beam To accelerate the electron ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The coarse frequency adjustment of a reflex klystron is accomplished by Adjusting the flexible wall of the resonant cavity The AFC system Varying the repeller voltage An adjustment in the synchronizer Adjusting the flexible wall of the resonant cavity The AFC system Varying the repeller voltage An adjustment in the synchronizer ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The main frequency determining element of a klystron is Its mode of operation The repeller voltage The accelerating voltage Its resonant cavity Its mode of operation The repeller voltage The accelerating voltage Its resonant cavity ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What allow microwave to pass in only one direction? RF emitter Ferrite emitter Varactor-triac Capacitor RF emitter Ferrite emitter Varactor-triac Capacitor ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A shipboard equipment which measures the distance between the ship’s bottom and the ocean floor. LORAN Echosounder SONAR Fathometer LORAN Echosounder SONAR Fathometer ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A thin layer of dirt and grime coverts the reflecting surface of the parabolic dish of a radar set. The particular effect on the performance of the radar will be No noticeable effect A reduction in horizontal resolution A decrease in range A decrease in gain No noticeable effect A reduction in horizontal resolution A decrease in range A decrease in gain ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS