Discussion
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- Question
The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = Total height of water above the weir = H + Ha H = Height of water, over the crest of the weir, and Ha = Height of water, due to velocity of approach)
Options- A.
Cd x L2g [H1 - Ha] - B. Cd x L2g [H13/2 - Ha3/2]
- C. Cd x L2g [H12 - Ha2]
- D. Cd x L2g [H15/2 - Ha5/2]
- Correct Answer
- Cd x L2g [H13/2 - Ha3/2]
- 1. The atmospheric pressure at sea level is
Options- A. 103 kN/m2
- B. 10.3 m of water
- C. 760 mm of mercury
- D. all of these Discuss
- 2. The viscosity of water is __________ than that of mercury.
Options- A. higher
- B. lower Discuss
- 3. A weir is usually made of masonry or concrete.
Options- A. Yes
- B. No Discuss
- 4. The hydraulic gradient line may be above or below the centre line of the pipe.
Options- A. True
- B. False Discuss
- 5. Which of the following statement is correct?
Options- A. The algebraic sum of the forces, constituting the couple is zero.
- B. The algebraic sum of the forces, constituting the couple, about any point is the same.
- C. A couple cannot be balanced by a single force but can be balanced only by a couple of opposite sense.
- D. all of the above Discuss
- 6. The specific gravity has no units.
Options- A. Agree
- B. Disagree Discuss
- 7. The shear stress-strain graph for a newtonian fluid is a
Options- A. straight line
- B. parabolic curve
- C. hyperbolic curve
- D. elliptical Discuss
- 8. If a pitot tube is placed with its nose upstream, downstream or sideways, the reading will be the same in every case.
Options- A. True
- B. False Discuss
- 9. The loss of pressure head in case of laminar flow is proportional to
Options- A. velocity
- B. (velocity)2
- C. (velocity)3
- D. (velocity)4 Discuss
- 10. Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, at right angles to the direction of flow of the liquid is known as lift.
Options- A. True
- B. False Discuss
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: all of these
Correct Answer: higher
Correct Answer: Yes
Correct Answer: False
Correct Answer: all of the above
Correct Answer: Agree
Correct Answer: straight line
Correct Answer: False
Correct Answer: velocity
Correct Answer: True
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