Microwave Communication A thin layer of dirt and grime coverts the reflecting surface of the parabolic dish of a radar set. The particular effect on the performance of the radar will be A decrease in range A reduction in horizontal resolution No noticeable effect A decrease in gain A decrease in range A reduction in horizontal resolution No noticeable effect A decrease in gain ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The coarse frequency adjustment of a reflex klystron is accomplished by The AFC system Adjusting the flexible wall of the resonant cavity An adjustment in the synchronizer Varying the repeller voltage The AFC system Adjusting the flexible wall of the resonant cavity An adjustment in the synchronizer Varying the repeller voltage ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication It is possible to increase the maximum range of a radar equipment by Raising the peak power of the transmitter All of these Narrowing the beam width and increasing the pulse duration Lowering the pulse frequency Raising the peak power of the transmitter All of these Narrowing the beam width and increasing the pulse duration Lowering the pulse frequency 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 increased Must be doubled May be decreased Must remain as before Must be increased Must be doubled May be decreased Must remain as before ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the reception problems below that is not due to multipath? Slow fading Delayed spreading Random Doppler shift Rayleigh fading Slow fading Delayed spreading Random Doppler shift Rayleigh fading 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
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