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NEC Civil · 2081 · Question 6

A penstock is 3000 meters long. Pressure wave travels in it with a velocity of 1500 m/s. If the turbine gates closed uniformly and completely in a period of 4.5 seconds, then it is called:

GitBook practice — Set 9 (Poush, 2081)

Aslow closure

Brapid closure

Cuniform closure

Dsudden closure

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