A microwave tube amplifier uses an axial magnetic field and a radial electric field. This is the:

A microwave tube amplifier uses an axial magnetic field and a radial e

1.	A microwave tube amplifier uses an axial magnetic field and a radial electric field. This is the:
A.	Reflex klystron
B.	Coaxial magnetron
C.	Travelling-wave magnetron
D.	CFA
Answer» E.

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