Microwave Communication Which of the following permits a microwave signal to travel in one direction with virtually no loss, but severely attenuates any signal attempting to travel in the reverse direction? Circulator Isolator Tunnel diode Wave trap Circulator Isolator Tunnel diode Wave trap ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The resonant frequency of a cavity resonator depends upon Its electrical dimensions Its physical dimensions The capacitor which tunes it The mode of operation Its electrical dimensions Its physical dimensions The capacitor which tunes it The mode of operation ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Oscillators of a klystron tube are maintained By plate-to-cathode feedback By circulating bunches of electrons within the cavities. By bunches of electrons passing the cavity grids By feedback between the accelerating grid and the repeller By plate-to-cathode feedback By circulating bunches of electrons within the cavities. By bunches of electrons passing the cavity grids By feedback between the accelerating grid and the repeller ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The aquadag coating on the inside of PPI tube is used To focus the beam of primary electrons To shield the electron beam from unidirectional magnetic All of these As a second anode and to prevent the build-up of secondary field To focus the beam of primary electrons To shield the electron beam from unidirectional magnetic All of these As a second anode and to prevent the build-up of secondary field ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Calculate the effective earth’s radius if the surface refractivity is 301. 6370 mi 8493 mmi 6370 km 8493 km 6370 mi 8493 mmi 6370 km 8493 km ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the π/2 mode π mode 2π mode π/4 mode π/2 mode π mode 2π mode π/4 mode ANSWER DOWNLOAD EXAMIANS APP
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