Microwave Communication Which of the following is used as an oscillator device in the SHF band? Both B and C Klystron tube Thyratron tube Tunnel diode Both B and C Klystron tube Thyratron tube Tunnel diode ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Calculate the effective earth’s radius if the surface refractivity is 301. 8493 km 8493 mmi 6370 mi 6370 km 8493 km 8493 mmi 6370 mi 6370 km ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The main frequency determining element of a klystron is The repeller voltage Its mode of operation Its resonant cavity The accelerating voltage The repeller voltage Its mode of operation Its resonant cavity The accelerating voltage 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 restricted high-frequency response The shortest possible time Low-pass filters A long time constant The restricted high-frequency response The shortest possible time ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The Gunn diode oscillator Operates over a positive resistance characteristic Depends on the formation of charge domain Generates frequencies which are below 100 MHz Is capable of generating continuous microwave power of the order of kilowatt Operates over a positive resistance characteristic Depends on the formation of charge domain Generates frequencies which are below 100 MHz Is capable of generating continuous microwave power of the order of kilowatt ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication As the electron beam moves through a klystron’s intercavity drift space Phase 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 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 Phase 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 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 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS