Microwave Communication The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the Distributed lead inductance Inter-electrode capacitance Degree of emission from the cathode Electron transit time Distributed lead inductance Inter-electrode capacitance Degree of emission from the cathode Electron transit time 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 be increased May be decreased Must remain as before Must be doubled Must be increased May be decreased Must remain as before Must be doubled 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. Sixth Fifth Fourth Third Sixth Fifth Fourth Third ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In an SHF pulsed radar set, a reflex klystron can be used as a Duplexer stage Transmitter oscillator Single mixer stage Local oscillator Duplexer stage Transmitter oscillator Single mixer stage Local oscillator 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 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 The restricted high-frequency response ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A traveling-wave tube (TWT) amplifies by virtue of The absorption of energy by the signal from an electron stream The energy contained the cavity resonators The effect of an external magnetic field The energy liberated form the collector The absorption of energy by the signal from an electron stream The energy contained the cavity resonators The effect of an external magnetic field The energy liberated form the collector ANSWER DOWNLOAD EXAMIANS APP
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