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 Must remain as before May be decreased Must be increased Must be doubled Must remain as before May be decreased Must be increased ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication If k-factor is greater than 1, the array beam is bent Towards the ionosphere, Away from the earth Towards the earth Towards the outer space Towards the ionosphere, Away from the earth Towards the earth Towards the outer space ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In microwave transmission using digital radio, what causes most intersymbol interference? Delayed spreading Slow fading Random Doppler shift Rayleigh fading Delayed spreading Slow fading Random Doppler shift Rayleigh fading ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Oscillators of a klystron tube are maintained By circulating bunches of electrons within the cavities. By plate-to-cathode feedback By feedback between the accelerating grid and the repeller By bunches of electrons passing the cavity grids By circulating bunches of electrons within the cavities. By plate-to-cathode feedback By feedback between the accelerating grid and the repeller By bunches of electrons passing the cavity grids ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication At what position is the input signal inserted into a traveling-wave tube? At the cathode end of the helix At the control grid of the electron gun At the collector end of the helix At the collector At the cathode end of the helix At the control grid of the electron gun At the collector end of the helix At the collector ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Rainfall is an important factor for fading of radio waves at frequencies above 100 GHz 1 GHz 10 GHz 100 MHz 100 GHz 1 GHz 10 GHz 100 MHz ANSWER DOWNLOAD EXAMIANS APP
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