Microwave Communication A traveling-wave tube (TWT) amplifies by virtue of The energy liberated form the collector The absorption of energy by the signal from an electron stream The energy contained the cavity resonators The effect of an external magnetic field The energy liberated form the collector The absorption of energy by the signal from an electron stream The energy contained the cavity resonators The effect of an external magnetic field ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Klystron oscillators are most often used in the frequency range of 300 to 3000 MHz 30 to 30000 MHz 10 to 10000 MHz 3000 to 30000 MHz 300 to 3000 MHz 30 to 30000 MHz 10 to 10000 MHz 3000 to 30000 MHz 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 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 ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication As the electron beam moves through a klystron’s intercavity drift space Frequency modulation at the input cavity creates velocity modulation at the output cavity Phase modulation at the input cavity creates velocity modulation at the output cavity. Velocity modulation at the input cavity creates density modulation at the output cavity Density modulation at the input cavity creates velocity modulation at the output cavity Frequency modulation at the input cavity creates velocity modulation at the output cavity Phase modulation at the input cavity creates velocity modulation at the output cavity. Velocity modulation at the input cavity creates density modulation at the output cavity Density modulation at the input cavity creates velocity modulation at the output cavity ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication It is possible to increase the maximum range of a radar equipment by Lowering the pulse frequency Raising the peak power of the transmitter Narrowing the beam width and increasing the pulse duration All of these Lowering the pulse frequency Raising the peak power of the transmitter Narrowing the beam width and increasing the pulse duration All of these 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? Circulator Isolator Magnetron Simplex Circulator Isolator Magnetron Simplex ANSWER DOWNLOAD EXAMIANS APP
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