Microwave Communication A traveling-wave tube (TWT) amplifies by virtue of The effect of an external magnetic field The absorption of energy by the signal from an electron stream The energy liberated form the collector The energy contained the cavity resonators The effect of an external magnetic field The absorption of energy by the signal from an electron stream The energy liberated form the collector The energy contained the cavity resonators ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the Inter-electrode capacitance Distributed lead inductance Electron transit time Degree of emission from the cathode Inter-electrode capacitance Distributed lead inductance Electron transit time Degree of emission from the cathode 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 Which may be used to tune the radar synchronizer To the tone of the pulse repetition Tune the magnetron to the correct frequency Which may be used to tune the radar receiver Which may be used to tune the radar synchronizer To the tone of the pulse repetition Tune the magnetron to the correct frequency ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The coarse frequency adjustment of a reflex klystron is accomplished by Varying the repeller voltage An adjustment in the synchronizer The AFC system Adjusting the flexible wall of the resonant cavity Varying the repeller voltage An adjustment in the synchronizer The AFC system Adjusting the flexible wall of the resonant cavity ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What is the purpose of the electromagnetic field which surrounds a traveling-wave tube? To keep the electrons from spreading out To accelerate the electron To slow down the signal on the helix To velocity modulate the electron beam To keep the electrons from spreading out To accelerate the electron To slow down the signal on the helix To velocity modulate the electron beam ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication It is possible to increase the maximum range of a radar equipment by Narrowing the beam width and increasing the pulse duration All of these Lowering the pulse frequency Raising the peak power of the transmitter Narrowing the beam width and increasing the pulse duration All of these Lowering the pulse frequency Raising the peak power of the transmitter ANSWER DOWNLOAD EXAMIANS APP
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