Microwave Communication A traveling-wave tube (TWT) amplifies by virtue of 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 The energy liberated form the collector ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Calculate the effective earth’s radius if the surface refractivity is 301. 6370 mi 8493 mmi 8493 km 6370 km 6370 mi 8493 mmi 8493 km 6370 km 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 To achieve good bearing resolution when using a pulsed-radar set, an important requirement is A narrow, antenna-beam width in the vertical plane A narrow, antenna-beam width in the horizontal plane A high duty cycle A low repetition rate A narrow, antenna-beam width in the vertical plane A narrow, antenna-beam width in the horizontal plane A high duty cycle A low repetition rate ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the Electron transit time Inter-electrode capacitance Distributed lead inductance Degree of emission from the cathode Electron transit time Inter-electrode capacitance Distributed lead inductance Degree of emission from the cathode ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS