A penstock pipe of 10 m diameter carries water under a pressure head o – McqOptions

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1.	A penstock pipe of 10 m diameter carries water under a pressure head of 100 m. If the wall thickness is 9 mm, what is the tensile stress in the pipe wall in MPa?
A.	2725
B.	545.0
C.	272.5
D.	1090
Answer» C. 272.5

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