Q. In a _ oscillator, the RF wave travels along the helix from the collector towards the electron gun

A
Interaction oscillator
B
Backward wave oscillator
C
Magnetrons
D
None of the mentioned
Solution:

In a backward wave oscillator, the RF wave travels along the helix from the collector towards the electron gun. Thus the signal for oscillation is provided by the bunched electron beam itself and oscillation occurs

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