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| Q.78 | If the time required to close a valve of a pipe is greater than 2L/C (where L is the length of the pipe and C is the velocity of the pressure wave produced due to water hammer), then the valve closure is said to be: | |
| Ans | A. sudden | |
| B. zero | ||
| C. constant | ||
| D. gradual |
Correct Ans Provided: D
