Microwave Communication At what position is the input signal inserted into a traveling-wave tube? At the collector end of the helix At the collector At the cathode end of the helix At the control grid of the electron gun At the collector end of the helix At the collector At the cathode end of the helix At the control grid of the electron gun ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The frequency of the oscillation generated by a magnetron, is mainly determined by The dimension of each cavity resonator The ratio of the dc cathode voltage to the magnetic flux density The number of the cavity resonators The flux density of the external magnet The dimension of each cavity resonator The ratio of the dc cathode voltage to the magnetic flux density The number of the cavity resonators The flux density of the external magnet ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A high-power microwave pulse of the order of megawatts can be generated by a Reflex klystron Gunn diode Traveling-wave tube Magnetron Reflex klystron Gunn diode Traveling-wave tube Magnetron ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Coupling into and out of a traveling-wave tube can be accompanied by a Cavity match Waveguide match Direct coax-helix match All of these Cavity match Waveguide match Direct coax-helix match All of these ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the STC circuit is used to Increases receiver sensitivity for echoes from targets Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return Improve the target bearing resolution Increases receiver sensitivity for echoes from targets Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return Improve the target bearing resolution 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 Sixth Fifth Third Fourth Sixth Fifth Third ANSWER DOWNLOAD EXAMIANS APP
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