Microwave Communication What is the purpose of the electromagnetic field which surrounds a traveling-wave tube? 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 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 Generates frequencies which are below 100 MHz Operates over a positive resistance characteristic Is capable of generating continuous microwave power of the order of kilowatt Depends on the formation of charge domain Generates frequencies which are below 100 MHz Operates over a positive resistance characteristic Is capable of generating continuous microwave power of the order of kilowatt ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a radar-set receiver, the usual mixer stage is And FET A Rochelle salts crystal A tunnel diode A silicon crystal And FET A Rochelle salts crystal A tunnel diode A silicon crystal 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. Sixth Fourth Third Fifth Sixth Fourth Third Fifth 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 The frequency will decrease Oscillation will cease Bunching would occur earlier in time Output power would increase The frequency will decrease Oscillation will cease Bunching would occur earlier in time Output power would increase ANSWER DOWNLOAD EXAMIANS APP
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