Microwave Communication Microwave frequencies are normally regarded as those in the range of 1000 to 10,000 GHz 1 to 100 GHz 1 to 500 MHz 10 to 1000 GHz 1000 to 10,000 GHz 1 to 100 GHz 1 to 500 MHz 10 to 1000 GHz ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What is the purpose of the electromagnetic field which surrounds a traveling-wave tube? To keep the electrons from spreading out To velocity modulate the electron beam To accelerate the electron To slow down the signal on the helix To keep the electrons from spreading out To velocity modulate the electron beam To accelerate the electron To slow down the signal on the helix ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication When it is desired that short-range targets be clearly seen on a pulsed-radar set, it is important that the receiver and display system have Low-pass filters The shortest possible time A long time constant The restricted high-frequency response Low-pass filters The shortest possible time A long time constant The restricted high-frequency response ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A traveling-wave tube (TWT) amplifies by virtue of The effect of an external magnetic field The energy contained the cavity resonators The absorption of energy by the signal from an electron stream The energy liberated form the collector The effect of an external magnetic field The energy contained the cavity resonators The absorption of energy by the signal from an electron stream The energy liberated form the collector ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The cavity resonator Has a low Q factor for narrow operation. Produces a frequency which is independent of the cavity size. In a reflect klystron has its output taken from the reflector plate Is equivalent to an LC resonant circuit Has a low Q factor for narrow operation. Produces a frequency which is independent of the cavity size. In a reflect klystron has its output taken from the reflector plate Is equivalent to an LC resonant circuit ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication If k-factor is greater than 1, the array beam is bent Towards the earth Towards the outer space Towards the ionosphere, Away from the earth Towards the earth Towards the outer space Towards the ionosphere, Away from the earth ANSWER DOWNLOAD EXAMIANS APP
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