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Microwave Communication
Microwave frequencies are normally regarded as those in the range of
1000 to 10,000 GHz
1 to 500 MHz
10 to 1000 GHz
1 to 100 GHz
1000 to 10,000 GHz
1 to 500 MHz
10 to 1000 GHz
1 to 100 GHz
Answer
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Related Question
Microwave Communication
Which of the following operating frequencies is used for the modern loran navigational system?
Loran C: 100 kHz
Loran D: 10.2 kHz
Loran A: 1950 kHz
Loran B: 900 kHz
Loran C: 100 kHz
Loran D: 10.2 kHz
Loran A: 1950 kHz
Loran B: 900 kHz
Answer
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Microwave Communication
As the electron beam moves through a klystron’s intercavity drift space
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
Phase 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
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
Phase 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
Answer
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Microwave Communication
A reflex klystron is oscillating at the frequency of its resonant cavity. If the reflector voltage is made slightly less negative, the
Output power would increase
The frequency will decrease
Oscillation will cease
Bunching would occur earlier in time
Output power would increase
The frequency will decrease
Oscillation will cease
Bunching would occur earlier in time
Answer
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Microwave Communication
Oscillators of a klystron tube are maintained
By plate-to-cathode feedback
By bunches of electrons passing the cavity grids
By circulating bunches of electrons within the cavities.
By feedback between the accelerating grid and the repeller
By plate-to-cathode feedback
By bunches of electrons passing the cavity grids
By circulating bunches of electrons within the cavities.
By feedback between the accelerating grid and the repeller
Answer
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Microwave Communication
It is possible to increase the maximum range of a radar equipment by
Narrowing the beam width and increasing the pulse duration
Lowering the pulse frequency
Raising the peak power of the transmitter
All of these
Narrowing the beam width and increasing the pulse duration
Lowering the pulse frequency
Raising the peak power of the transmitter
All of these
Answer
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