Microwave Communication What is the purpose of the electromagnetic field which surrounds a traveling-wave tube? To keep the electrons from spreading out To accelerate the electron To slow down the signal on the helix To velocity modulate the electron beam To keep the electrons from spreading out To accelerate the electron To slow down the signal on the helix To velocity modulate the electron beam 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 Is used for receiver alignment Indicates only the range of a target Indicates both the range and azimuth of a target Is used to check the percentage of modulation Is used for receiver alignment Indicates only the range of a target Indicates both the range and azimuth of a target ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What ferrite device can be used instead of duplexer of isolate microwave transmitter and receiver when both are connected to the same antenna? Isolator Simplex Circulator Magnetron Isolator Simplex Circulator Magnetron ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the following is used as an oscillator device in the SHF band? Both B and C Thyratron tube Tunnel diode Klystron tube Both B and C Thyratron tube Tunnel diode Klystron tube ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the function of the duplexer is to Prevent frequency drift in the klystron Allow the transmitter and the receiver to operate from a common antenna Aid in calibrating the display unit All of these Prevent frequency drift in the klystron Allow the transmitter and the receiver to operate from a common antenna Aid in calibrating the display unit All of these 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 The restricted high-frequency response Low-pass filters A long time constant The shortest possible time The restricted high-frequency response Low-pass filters A long time constant The shortest possible time ANSWER DOWNLOAD EXAMIANS APP
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