Microwave Communication If k-factor is greater than 1, the array beam is bent Towards the ionosphere, Away from the earth Towards the outer space Towards the earth Towards the ionosphere, Away from the earth Towards the outer space Towards the earth ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The coarse frequency adjustment of a reflex klystron is accomplished by An adjustment in the synchronizer The AFC system Varying the repeller voltage Adjusting the flexible wall of the resonant cavity An adjustment in the synchronizer The AFC system Varying the repeller voltage Adjusting the flexible wall of the resonant cavity ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A PPI cathode-ray tube as used on a radar set Is used to check the percentage of modulation Indicates only the range of a target Indicates both the range and azimuth of a target Is used for receiver alignment Is used to check the percentage of modulation Indicates only the range of a target Indicates both the range and azimuth of a target Is used for receiver alignment 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 May be decreased Must be increased Must remain as before Must be doubled May be decreased Must be increased Must remain as before 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? Wave trap Isolator Tunnel diode Circulator Wave trap Isolator Tunnel diode Circulator 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. Third Fifth Fourth Sixth Third Fifth Fourth Sixth ANSWER DOWNLOAD EXAMIANS APP
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