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 gain 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 ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Oscillators of a klystron tube are maintained By bunches of electrons passing the cavity grids By feedback between the accelerating grid and the repeller By circulating bunches of electrons within the cavities. By plate-to-cathode feedback By bunches of electrons passing the cavity grids By feedback between the accelerating grid and the repeller By circulating bunches of electrons within the cavities. By plate-to-cathode feedback ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The maximum usable range of the usual radar set (on any particular range setting) is determined by The duty cycle The interval between transmitted pulses The bandwidth of the receiver IF stages The width of the transmitted pulses The duty cycle The interval between transmitted pulses The bandwidth of the receiver IF stages The width of the transmitted pulses 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 remain as before Must be increased May be decreased Must be doubled Must remain as before Must be increased May be decreased Must be doubled ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Microwave frequencies are normally regarded as those in the range of 1000 to 10,000 GHz 10 to 1000 GHz 1 to 500 MHz 1 to 100 GHz 1000 to 10,000 GHz 10 to 1000 GHz 1 to 500 MHz 1 to 100 GHz ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A magnetron is operated at a duty cycle of 0.001. It has a peak power output of 100 kilo-watts. Its average power is 1,000 watts 1,000,000 watts 10,000 watts 100 watts 1,000 watts 1,000,000 watts 10,000 watts 100 watts ANSWER DOWNLOAD EXAMIANS APP
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