Microwave Communication The frequency of the oscillation generated by a magnetron, is mainly determined by The ratio of the dc cathode voltage to the magnetic flux density The number of the cavity resonators The dimension of each cavity resonator The flux density of the external magnet The ratio of the dc cathode voltage to the magnetic flux density The number of the cavity resonators The dimension of each cavity resonator The flux density of the external magnet ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the STC circuit is used to 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 Increases receiver sensitivity for echoes from targets Vary the pulse frequency in order to control the maximum target ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m) S = λR/L S = λR/RL S = 2λR/L S = 3λR/L S = λR/L S = λR/RL S = 2λR/L S = 3λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the reception problems below that is not due to multipath? Slow fading Delayed spreading Rayleigh fading Random Doppler shift Slow fading Delayed spreading Rayleigh fading Random Doppler shift ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A PPI cathode-ray tube as used on a radar set Indicates only the range of a target Is used to check the percentage of modulation Is used for receiver alignment Indicates both the range and azimuth of a target Indicates only the range of a target Is used to check the percentage of modulation Is used for receiver alignment Indicates both the range and azimuth of a target ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a radar-set receiver, the usual mixer stage is A tunnel diode And FET A silicon crystal A Rochelle salts crystal A tunnel diode And FET A silicon crystal A Rochelle salts crystal ANSWER DOWNLOAD EXAMIANS APP
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