The time required to close a valve gradually is (where L is the length of pipe and C = velocity of pressure wave)

The time required to close a valve gradually is (where L is the length

1.	The time required to close a valve gradually is (where L is the length of pipe and C = velocity of pressure wave)
A.	4L/C
B.	> 2L/C
C.	>4L/C
D.	2L/C
Answer» C. >4L/C

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The time required to close a valve gradually is (where L is the length of pipe and C = velocity of pressure wave)

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