Microwave Communication The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the Degree of emission from the cathode Inter-electrode capacitance Electron transit time Distributed lead inductance Degree of emission from the cathode Inter-electrode capacitance Electron transit time Distributed lead inductance ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The frequency of the oscillation generated by a magnetron, is mainly determined by The flux density of the external magnet The number of the cavity resonators The dimension of each cavity resonator The ratio of the dc cathode voltage to the magnetic flux density The flux density of the external magnet The number of the cavity resonators The dimension of each cavity resonator The ratio of the dc cathode voltage to the magnetic flux density ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication To achieve good bearing resolution when using a pulsed-radar set, an important requirement is A high duty cycle A narrow, antenna-beam width in the horizontal plane A low repetition rate A narrow, antenna-beam width in the vertical plane A high duty cycle A narrow, antenna-beam width in the horizontal plane A low repetition rate A narrow, antenna-beam width in the vertical plane ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Oscillators of a klystron tube are maintained By plate-to-cathode feedback By feedback between the accelerating grid and the repeller By bunches of electrons passing the cavity grids By circulating bunches of electrons within the cavities. By plate-to-cathode feedback By feedback between the accelerating grid and the repeller By bunches of electrons passing the cavity grids By circulating bunches of electrons within the cavities. 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 The restricted high-frequency response Low-pass filters A long time constant The shortest possible time The restricted high-frequency response Low-pass filters A long time constant The shortest possible time ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the STC circuit is used to Improve the target bearing resolution Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return Increases receiver sensitivity for echoes from targets Improve the target bearing resolution Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return Increases receiver sensitivity for echoes from targets ANSWER DOWNLOAD EXAMIANS APP
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