Discussion
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- Question
The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (?) rad/s about its vertical axis, is
Options- A.
- B.
- C.
- D.
- Correct Answer
-
- 1. The mercury does not wet the glass. This is due to the property of the liquid known as
Options- A. cohesion
- B. adhesion
- C. viscosity
- D. surface tension Discuss
- 2. The velocity of the liquid flowing through the divergent portion of a venturimeter
Options- A. remains constant
- B. increases
- C. decreases
- D. depends upon mass of liquid Discuss
- 3. The force present in a moving liquid is
Options- A. inertia force
- B. viscous force
- C. gravity force
- D. all of these Discuss
- 4. When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure
Options- A. varies as the square of the radial distance
- B. increases linearly as its radial distance
- C. increases as the square of the radial distance
- D. decreases as the square of the radial distance Discuss
- 5. In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.
Options- A. equal to
- B. one-third
- C. two-third
- D. three-fourth Discuss
- 6. The ratio of the inertia force to the elastic force is called
Options- A. Reynold's number
- B. Froude's number
- C. Weber's number
- D. Mach number Discuss
- 7. The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)
Options- A. 2gH
- B. H2g
- C. 2gH
- D. 2gH Discuss
- 8. The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)
Options- A.
- B.
- C.
- D.
Discuss
- 9. The rise of liquid along the walls of a revolving cylinder about the initial level is __________ the depression of the liquid at the axis of rotation.
Options- A. same as
- B. less than
- C. more than Discuss
- 10. A fluid having no viscosity is known as
Options- A. real fluid
- B. ideal fluid
- C. newtonian fluid
- D. non-newtonian fluid Discuss
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: surface tension
Correct Answer: decreases
Correct Answer: all of these
Correct Answer: varies as the square of the radial distance
Correct Answer: two-third
Correct Answer: Mach number
Correct Answer: 2gH
Correct Answer:
Correct Answer: same as
Correct Answer: ideal fluid
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