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Mechanical Engineering
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Hydraulics and Fluid Mechanics
Comments
Question
A flow whose streamline is represented by a curve, is called
Options
A. one-dimensional flow
B. two-dimensional flow
C. three-dimensional flow
D. four-dimensional flow
Correct Answer
two-dimensional flow
Hydraulics and Fluid Mechanics problems
Search Results
1. The line of action of the force of buoyancy acts through the centre of gravity of the volume of the liquid displaced.
Options
A. True
B. False
Show Answer
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Correct Answer: True
2. The intensity of pressure at any point, in a liquid, is
Options
A. directly proportional to the area of the vessel containing liquid
B. directly proportional to the depth of liquid from the surface
C. directly proportional to the length of the vessel containing liquid
D. inversely proportional to the depth of liquid from the surface
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Correct Answer: directly proportional to the depth of liquid from the surface
3. The unit of kinematic viscosity in S. I. units is
Options
A. N-m/s
B. N-s/m
2
C. m
2
/s
D. N-m
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Correct Answer: m
2
/s
4. The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as
Options
A. path line
B. stream line
C. steak line
D. potential line
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Correct Answer: stream line
5. The absolute pressure is equal to
Options
A. gauge pressure + atmospheric pressure
B. gauge pressure - atmospheric pressure
C. atmospheric pressure - gauge pressure
D. gauge pressure - vacuum pressure
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Correct Answer: gauge pressure + atmospheric pressure
6. Stoke is the unit of
Options
A. kinematic viscosity in C. G. S. units
B. kinematic viscosity in M. K. S. units
C. dynamic viscosity in M. K. S. units
D. dynamic viscosity in S. I. units
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Correct Answer: kinematic viscosity in C. G. S. units
7. A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
Options
A. equal to
B. less than
C. more than
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Correct Answer: less than
8. The vacuum pressure is always the negative gauge pressure.
Options
A. Yes
B. No
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Correct Answer: Yes
9. When a cylindrical vessel of radius (
r
) containing liquid is revolved about its vertical axis ? rad/s, then depth of parabola which the liquid assumes is
Options
A.
B.
C.
D.
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Correct Answer:
10. The value of coefficient of discharge is __________ the value of coefficient of velocity.
Options
A. less than
B. same as
C. more than
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Correct Answer: less than
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