Related Questions

Oscillators of a klystron tube are maintained
A By bunches of electrons passing the cavity grids
B By plate-to-cathode feedback
C By feedback between the accelerating grid and the repeller
D By circulating bunches of electrons within the cavities.
The main frequency determining element of a klystron is
A The repeller voltage
B The accelerating voltage
C Its resonant cavity
D Its mode of operation
The coarse frequency adjustment of a reflex klystron is accomplished by
A The AFC system
B Adjusting the flexible wall of the resonant cavity
C An adjustment in the synchronizer
D Varying the repeller voltage
A reflex klystron is oscillating at the frequency of its resonant cavity. If the reflector voltage is made slightly less negative, the
A Oscillation will cease
B Output power would increase
C The frequency will decrease
D Bunching would occur earlier in time
Quartz crystal is most commonly used in crystal oscillators because ___________
A It has superior electrical properties
B It is easily available
C It is quite inexpensive
D None of the above
In an SHF pulsed radar set, a reflex klystron can be used as a
A Single mixer stage
B Local oscillator
C Transmitter oscillator
D Duplexer stage
As the electron beam moves through a klystron’s intercavity drift space
A Frequency modulation at the input cavity creates velocity modulation at the output cavity
B Velocity modulation at the input cavity creates density modulation at the output cavity
C Density modulation at the input cavity creates velocity modulation at the output cavity
D Phase modulation at the input cavity creates velocity modulation at the output cavity.
The Zaskar range, the Ladakh range, the Kailas and the Karakoram Range are the main ranges of:
A The Western Ghat
B The Aravali
C The Himalayan system
D The Eastern Ghat
What frequency range is the high frequency band?
A 3 kHz
B 3 to 30 MHz
C 30 to 300 MHz
D 10 GHz
The frequency generated by each decade in a direct frequency synthesizer is much higher than the frequency shown; this is done to
A Reduce the spurious frequency problem
B Increase the frequency stability of the synthesizer
C Reduce the number of decades
D Reduce the number of crystals required

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