Microwave Communication Which of the following is used as a high power microwave oscillator? Thyratron Klystron Magnetron Reflex-klystron Thyratron Klystron Magnetron Reflex-klystron ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the reception problems below that is not due to multipath? Random Doppler shift Slow fading Rayleigh fading Delayed spreading Random Doppler shift Slow fading Rayleigh fading Delayed spreading ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance. Fifth Fourth Sixth Third Fifth Fourth Sixth Third ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Oscillators of a klystron tube are maintained By circulating bunches of electrons within the cavities. By feedback between the accelerating grid and the repeller By plate-to-cathode feedback By bunches of electrons passing the cavity grids By circulating bunches of electrons within the cavities. By feedback between the accelerating grid and the repeller By plate-to-cathode feedback By bunches of electrons passing the cavity grids 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 May be decreased Must remain as before Must be increased Must be doubled May be decreased Must remain as before Must be increased Must be doubled ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What ferrite device can be used instead of duplexer of isolate microwave transmitter and receiver when both are connected to the same antenna? Isolator Magnetron Simplex Circulator Isolator Magnetron Simplex Circulator ANSWER DOWNLOAD EXAMIANS APP
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