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Mechanical Engineering
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Hydraulics and Fluid Mechanics
Comments
Question
The discharge in an open channel corresponding to critical depth is
Options
A. zero
B. minimum
C. maximum
Correct Answer
maximum
Hydraulics and Fluid Mechanics problems
Search Results
1. A weir, generally, used as a spillway of a dam is
Options
A. narrow crested weir
B. broad crested weir
C. Ogee weir
D. submerged weir
Show Answer
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Correct Answer: Ogee weir
2. A fluid which obeys the Newton's law of viscosity is termed as
Options
A. real fluid
B. ideal fluid
C. newtonian fluid
D. non-newtonian fluid
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Correct Answer: newtonian fluid
3. A fluid whose viscosity changes with the rate of deformation or shear strain is known as non-newtonian fluid.
Options
A. True
B. False
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Correct Answer: True
4. If the depth of water in an open channel is less than the critical depth, the flow is called
Options
A. critical flow
B. turbulent flow
C. tranquil flow
D. torrential flow
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Correct Answer: torrential flow
5. In order to avoid tendency of separation at throat in a venturimeter, the ratio of the diameter at throat to the diameter of pipe should be
Options
A.
B.
C.
D.
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Correct Answer:
6. A nozzle is generally made of
Options
A. cylindrical shape
B. convergent shape
C. divergent shape
D. convergent-divergent shape
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Correct Answer: convergent shape
7. According to Darcy's formula, the loss of head due to friction in the pipe is (where
f
= Darcy's coefficient,
l
= Length of pipe,
v
= Velocity of liquid in pipe, and
d
= Diameter of pipe)
Options
A.
B.
C.
D.
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Correct Answer:
8. The separation of flow occurs when the hydrodynamic boundary layer thickness is reduced to zero.
Options
A. Agree
B. Disagree
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Correct Answer: Agree
9. When the flow in an open channel is gradually varied, the flow is said to be
Options
A. steady uniform flow
B. steady non-uniform flow
C. unsteady uniform flow
D. unsteady non-uniform flow
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Correct Answer: steady non-uniform flow
10. The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.
Options
A. equal to
B. one-half
C. three fourth
D. double
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Correct Answer: double
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