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14_Hydraulics Practice Quiz with Answer and Solution
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This note contains practice quizzes for civil engineering hydraulics. It includes practice problems with answers and solutions for the study guide.
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Refresher - HYDRAULICS Quiz 14PROBLEM 1:
A cylindrical vessel 0.30 m. deep is half filled with water. When it is
rotated about its vertical axis with a speed of 150 rpm, the water just rises
to the rim of the vessel. Determine the diameter of the vessel.
Solution:
y = 0.30
2 2 ω
w r
y=
2g
150(2π)
w=
60
w = 15.71 rad/sec.
0.3m
(15.71)2 r 2
0.30 = 0.15m
2(9.81)
r = 0.15 m
D = 2(0.15)
D
D = 0.30 m
, Refresher - HYDRAULICS Quiz 14
PROBLEM 2:
A vertical triangular orifice has a base 3 m long, 2 m below the vertex and
4 m below the water surface. Determine the thoretical discharge
neglecting velocity of approach.
w.s.
h
4m
2m
3m
Solution:
2
h = 4 - = 3.33 m
3
Qt = A Vt = A 2gh
3(2)
Qt = 2(9.81)(3.33)
2
Qt = 24.26 m3 / s
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