Engineering :: Fluid Mechanics and Hydraulic Machines

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Hammer blow in pipe occurs when

[A].	Pipe is hit with hammer	[B].	Pipe bursts under high fluid pressure
[C].	Excessive leakage occurs in pipe	[D].	Flow of fluid through pipe is gradually brought to rest by the closing of valve
[E].	Flow of fluid through pipe is suddenly brought to rest by the closing of the valve

Answer: Option E