Microwave Communication What is the purpose of the electromagnetic field which surrounds a traveling-wave tube? To keep the electrons from spreading out To velocity modulate the electron beam 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 slow down the signal on the helix To accelerate the electron ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The Gunn diode oscillator Depends on the formation of charge domain Is capable of generating continuous microwave power of the order of kilowatt Generates frequencies which are below 100 MHz Operates over a positive resistance characteristic Depends on the formation of charge domain Is capable of generating continuous microwave power of the order of kilowatt Generates frequencies which are below 100 MHz Operates over a positive resistance characteristic ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a radar-set receiver, the usual mixer stage is A Rochelle salts crystal A silicon crystal And FET A tunnel diode A Rochelle salts crystal A silicon crystal And FET A tunnel diode ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance. Fourth Fifth Third Sixth Fourth Fifth Third Sixth ANSWER DOWNLOAD EXAMIANS APP
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 Output power would increase Oscillation will cease Bunching would occur earlier in time The frequency will decrease Output power would increase Oscillation will cease ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS