Microwave Communication In an SHF pulsed radar set, a reflex klystron can be used as a Local oscillator Transmitter oscillator Single mixer stage Duplexer stage Local oscillator Transmitter oscillator Single mixer stage Duplexer stage ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The coarse frequency adjustment of a reflex klystron is accomplished by An adjustment in the synchronizer Varying the repeller voltage Adjusting the flexible wall of the resonant cavity The AFC system An adjustment in the synchronizer Varying the repeller voltage Adjusting the flexible wall of the resonant cavity The AFC system 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? Circulator Tunnel diode Wave trap Isolator Circulator Tunnel diode Wave trap Isolator 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 2π mode π mode π/4 mode π/2 mode 2π mode π mode π/4 mode π/2 mode ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The maximum usable range of the usual radar set (on any particular range setting) is determined by The interval between transmitted pulses The width of the transmitted pulses The bandwidth of the receiver IF stages The duty cycle The interval between transmitted pulses The width of the transmitted pulses The bandwidth of the receiver IF stages The duty cycle ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m) S = λR/RL S = 3λR/L S = 2λR/L S = λR/L S = λR/RL S = 3λR/L S = 2λR/L S = λR/L ANSWER DOWNLOAD EXAMIANS APP
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