Microwave Communication What allow microwave to pass in only one direction? Capacitor RF emitter Ferrite emitter Varactor-triac Capacitor RF emitter Ferrite emitter Varactor-triac ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the following is used as an oscillator device in the SHF band? Tunnel diode Both B and C Klystron tube Thyratron tube Tunnel diode Both B and C Klystron tube Thyratron tube ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The aquadag coating on the inside of PPI tube is used To shield the electron beam from unidirectional magnetic To focus the beam of primary electrons All of these As a second anode and to prevent the build-up of secondary field To shield the electron beam from unidirectional magnetic To focus the beam of primary electrons All of these As a second anode and to prevent the build-up of secondary field 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 doubled Must remain as before Must be increased May be decreased Must be doubled Must remain as before Must be increased May be decreased ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the STC circuit is used to Increases receiver sensitivity for echoes from targets Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return Improve the target bearing resolution Increases receiver sensitivity for echoes from targets Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return Improve the target bearing resolution 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/4 mode π mode 2π mode π/2 mode π/4 mode π mode 2π mode π/2 mode ANSWER DOWNLOAD EXAMIANS APP
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