Microwave Communication The cavity resonator Has a low Q factor for narrow operation. In a reflect klystron has its output taken from the reflector plate Produces a frequency which is independent of the cavity size. Is equivalent to an LC resonant circuit Has a low Q factor for narrow operation. In a reflect klystron has its output taken from the reflector plate Produces a frequency which is independent of the cavity size. Is equivalent to an LC resonant circuit ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication __________ is the progressive decrease of signal strength with increasing distance. Propagation Modulation Radiation Attenuation Propagation Modulation Radiation Attenuation ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A traveling-wave tube (TWT) amplifies by virtue of The effect of an external magnetic field The energy liberated form the collector The energy contained the cavity resonators The absorption of energy by the signal from an electron stream The effect of an external magnetic field The energy liberated form the collector The energy contained the cavity resonators The absorption of energy by the signal from an electron stream 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 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 To slow down the signal on the helix ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A PPI cathode-ray tube as used on a radar set Is used to check the percentage of modulation Indicates only the range of a target Indicates both the range and azimuth of a target Is used for receiver alignment Is used to check the percentage of modulation Indicates only the range of a target Indicates both the range and azimuth of a target Is used for receiver alignment ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication When it is desired that short-range targets be clearly seen on a pulsed-radar set, it is important that the receiver and display system have A long time constant Low-pass filters The shortest possible time The restricted high-frequency response A long time constant Low-pass filters The shortest possible time The restricted high-frequency response ANSWER DOWNLOAD EXAMIANS APP
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