In a TWT the phase velocity of the axial component of the field on the – McqOptions

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1.	In a TWT the phase velocity of the axial component of the field on the slow wave structure is kept
A.	equal to velocity of electron
B.	slightly less than velocity of electron
C.	slightly more than velocity of electron
D.	equal to velocity of light in free space
Answer» B. slightly less than velocity of electron

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