Microwave Communication Which causes multipath or frequency selective fading? Nearer reflector Large reflector Further reflector Small reflector Nearer reflector Large reflector Further reflector Small reflector ANSWER DOWNLOAD EXAMIANS APP
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? Isolator Circulator Wave trap Tunnel diode Isolator Circulator Wave trap Tunnel diode ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication At what position is the input signal inserted into a traveling-wave tube? At the cathode end of the helix At the collector At the control grid of the electron gun At the collector end of the helix At the cathode end of the helix At the collector At the control grid of the electron gun At the collector end of the helix 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 feedback between the accelerating grid and the repeller By bunches of electrons passing the cavity grids By plate-to-cathode feedback By circulating bunches of electrons within the cavities. By feedback between the accelerating grid and the repeller By bunches of electrons passing the cavity grids ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The aquadag coating on the inside of PPI tube is used As a second anode and to prevent the build-up of secondary field All of these To shield the electron beam from unidirectional magnetic To focus the beam of primary electrons As a second anode and to prevent the build-up of secondary field All of these To shield the electron beam from unidirectional magnetic To focus the beam of primary electrons ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The Gunn diode oscillator 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 Operates over a positive resistance characteristic ANSWER DOWNLOAD EXAMIANS APP
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