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 range A decrease in gain A reduction in horizontal resolution No noticeable effect A decrease in range A decrease in gain A reduction in horizontal resolution No noticeable effect ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What is the purpose of the electromagnetic field which surrounds a traveling-wave tube? To velocity modulate the electron beam To slow down the signal on the helix To keep the electrons from spreading out To accelerate the electron To velocity modulate the electron beam To slow down the signal on the helix To keep the electrons from spreading out To accelerate the electron ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the following is used as an oscillator device in the SHF band? Thyratron tube Klystron tube Tunnel diode Both B and C Thyratron tube Klystron tube Tunnel diode Both B and C 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? Isolator Tunnel diode Wave trap Circulator Isolator Tunnel diode Wave trap Circulator ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The main frequency determining element of a klystron is The repeller voltage The accelerating voltage Its mode of operation Its resonant cavity The repeller voltage The accelerating voltage Its mode of operation Its resonant cavity ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a radar-set receiver, the usual mixer stage is And FET A Rochelle salts crystal A tunnel diode A silicon crystal And FET A Rochelle salts crystal A tunnel diode A silicon crystal ANSWER DOWNLOAD EXAMIANS APP
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