Permissible velocity of water flowing through concrete lined tunnel is – McqOptions

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1.	Permissible velocity of water flowing through concrete lined tunnel is usually __________________?
A.	3 – 4m/sec
B.	4 – 5m/sec
C.	5 – 6m/sec
D.	6 – 7m/sec
Answer» C. 5 – 6m/sec

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