Vibrations in the tubes of a shell and tube heat exchanger is induced

1.	Vibrations in the tubes of a shell and tube heat exchanger is induced due to the
A.	flow of fluid on the tube and shell sides.
B.	oscillations in the flow of shell/tube sides fluid.
C.	vibrations transmitted through piping and/or supports due to external reasons.
D.	all (a), (b) and (c)
Answer» E.

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Vibrations in the tubes of a shell and tube heat exchanger is induced due to the

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