Discussion
Home ‣ Mechanical Engineering ‣ Hydraulics and Fluid Mechanics Comments
- Question
Viscous force is the __________ of shear stress due to viscosity and cross-sectionar area of flow.
Options- A. sum
- B. different
- C. product
- D. ratio
- Correct Answer
- product
- 1. One stoke is equal to
Options- A. 10-2 m2/s
- B. 10-3 m2/s
- C. 10-4 m2/s
- D. 10-6 m2/s Discuss
- 2. When a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of
Options- A. a triangle
- B. a paraboloid
- C. an ellipse
- D. none of these Discuss
- 3. The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to
Options- A. 1/2 depth
- B. 1/2 breadth
- C. 1/2 sloping side
- D. 1/4 (depth + breadth) Discuss
- 4. The flow in a pipe is laminar, when Reynold number is less than 2000.
Options- A. True
- B. False Discuss
- 5. The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)
Options- A. w.A
- B. wx
- C. wAx
- D. wA/x Discuss
- 6. The power transmitted through the pipe is maximum when the head lost due to friction is equal to
Options- A. one-fourth of the total supply head
- B. one-third of the total supply head
- C. one-half of the total supply head
- D. two-third of the total supply head Discuss
- 7. Water is __________ liquid.
Options- A. a compressible
- B. an incompressible Discuss
- 8. The water hammer in pipes occurs due to sudden change in the velocity of flowing liquid
Options- A. Agree
- B. Disagree Discuss
- 9. When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is
Options- A. 1.84(L - 0.1nH)H3/2
- B. 1.84(L - nH)H2
- C. 1.84(L - 0.1nH)H5/2
- D. 1.84(L - nH)H3 Discuss
- 10. The buoyancy depends upon the
Options- A. weight of the liquid displaced
- B. pressure with which the liquid is displaced
- C. viscosity of the liquid
- D. compressibility of the liquid Discuss
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: 10-4 m2/s
Correct Answer: a paraboloid
Correct Answer: 1/2 depth
Correct Answer: True
Correct Answer: wAx
Correct Answer: one-third of the total supply head
Correct Answer: an incompressible
Correct Answer: Agree
Correct Answer: 1.84(L - 0.1nH)H3/2
Correct Answer: weight of the liquid displaced
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