Hydraulics and Fluid Mechanics problems
- 1. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
Options- A. narrow-crested weir
- B. broad-crested weir
- C. Ogee weir
- D. submerged weir Discuss
Correct Answer: submerged weir
- 2. The hydraulic mean depth or the hydraulic radius is the ratio of
Options- A. area of flow and wetted perimeter
- B. wetted perimeter and diameter of pipe
- C. velocity of flow and area of flow
- D. none of these Discuss
Correct Answer: area of flow and wetted perimeter
- 3. The Cippoletti weir is a __________ weir.
Options- A. rectangular
- B. triangular
- C. trapezoidal
- D. circular Discuss
Correct Answer: trapezoidal
- 4. One poise is equal to
Options- A. 0.1 N-s/m2
- B. 1 N-s/m2
- C. 10 N-s/m2
- D. 100 N-s/m2 Discuss
Correct Answer: 0.1 N-s/m2
- 5. Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure.
Options- A. plus
- B. minus Discuss
Correct Answer: minus
- 6. When a body is placed over a liquid, it will sink down if
Options- A. gravitational force is equal to the upthrust of the liquid
- B. gravitational force is less than the upthrust of the liquid
- C. gravitational force is more than the upthrust of the liquid
- D. none of the above Discuss
Correct Answer: gravitational force is more than the upthrust of the liquid
- 7. A flow whose streamline is represented by a straight line, is called __________ dimensional flow.
Options- A. one
- B. two
- C. three
- D. four Discuss
Correct Answer: one
- 8. The metacentric height is the distance between the
Options- A. centre of gravity of the floating body and the centre of buoyancy
- B. centre of gravity of the floating body and the metacentre
- C. metacentre and centre of buoyancy
- D. original centre of buoyancy and new centre of buoyancy Discuss
Correct Answer: centre of gravity of the floating body and the metacentre
- 9. The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 10. When the end contractions of the weir are suppressed, then number of end contractions (n) are taken as zero
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
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