Oscillators of a klystron tube are maintained – McqOptions

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1.	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.
Answer» B. By plate-to-cathode feedback

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