Discussion
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- Question
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, ? = Viscosity of the liquid, and w = Specific weight of the flowing liquid)
Options- A.
- B.
- C.
- D.
- Correct Answer
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- 1. A fluid having no viscosity is known as
Options- A. real fluid
- B. ideal fluid
- C. newtonian fluid
- D. non-newtonian fluid Discuss
- 2. 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
- 3. 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
- 4. 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
- 5. 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
- 6. The viscosity of water at 20°C is
Options- A. one stoke
- B. one centistroke
- C. one poise
- D. one centipoise Discuss
- 7. The pressure of air __________ with the increase of height from the surface of the earth.
Options- A. does not change
- B. decreases
- C. increases Discuss
- 8. A body floating in a liquid is said to be not in equilibrium if its metacentre lies below its centre of gravity.
Options- A. Agree
- B. Disagree Discuss
- 9. According to Manning's formula, the discharge through an open channel is (where M = Manning's constant)
Options- A. A x M x m1/2 x i2/3
- B. A x M x m2/3 x i1/2
- C. A1/2 x M2/3 x m x i
- D. A2/3 x M1/3 x m x i Discuss
- 10. The intensity of pressure at any point, in a liquid, is __________ to the depth of liquid from the surface.
Options- A. equal
- B. directly proportional
- C. inversely proportional Discuss
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: ideal fluid
Correct Answer: same as
Correct Answer:
Correct Answer: 2gH
Correct Answer: Mach number
Correct Answer: one centipoise
Correct Answer: decreases
Correct Answer: Agree
Correct Answer: A x M x m2/3 x i1/2
Correct Answer: directly proportional
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