Microwave Communication In an SHF pulsed radar set, a reflex klystron can be used as a Single mixer stage Transmitter oscillator Local oscillator Duplexer stage Single mixer stage Transmitter oscillator Local oscillator Duplexer stage ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A traveling-wave tube (TWT) amplifies by virtue of The energy liberated form the collector The effect of an external magnetic field The absorption of energy by the signal from an electron stream The energy contained the cavity resonators The energy liberated form the collector The effect of an external magnetic field The absorption of energy by the signal from an electron stream The energy contained the cavity resonators ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication If the duration of the radar transmitted pulse, on a particular range of operation, is increased, the required bandwidth of the receiver’s IF amplifiers Must remain as before Must be increased May be decreased Must be doubled Must remain as before Must be increased May be decreased Must be doubled ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication As the electron beam moves through a klystron’s intercavity drift space Velocity modulation at the input cavity creates density modulation at the output cavity Density modulation at the input cavity creates velocity modulation at the output cavity Frequency modulation at the input cavity creates velocity modulation at the output cavity Phase modulation at the input cavity creates velocity modulation at the output cavity. Velocity modulation at the input cavity creates density modulation at the output cavity Density modulation at the input cavity creates velocity modulation at the output cavity Frequency modulation at the input cavity creates velocity modulation at the output cavity Phase modulation at the input cavity creates velocity modulation at the output cavity. ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the reception problems below that is not due to multipath? Delayed spreading Random Doppler shift Rayleigh fading Slow fading Delayed spreading Random Doppler shift Rayleigh fading Slow fading 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. Fifth Fourth Sixth Third Fifth Fourth Sixth Third ANSWER DOWNLOAD EXAMIANS APP
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