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- Question
Coefficient of contraction is the ratio of
Options- A. actual velocity of jet at vena contracta to the theoretical velocity
- B. loss of head in the orifice to the head of water available at the exit of the orifice
- C. actual discharge through an orifice to the theoretical discharge
- D. area of jet at vena contracta to the area of orifice
- Correct Answer
- area of jet at vena contracta to the area of orifice
- 1. The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)
Options- A. 1/RN
- B. 4/RN
- C. 16/RN
- D. 64/RN Discuss
- 2. In a venturimeter, the velocity of liquid at throat is __________ than at inlet.
Options- A. higher
- B. lower Discuss
- 3. The coefficient of discharge for an external mouthpiece is
Options- A. 0.375
- B. 0.5
- C. 0.707
- D. 0.855 Discuss
- 4. The Reynold's number of a ship is __________ to its velocity and length.
Options- A. directly proportional
- B. inversely proportional Discuss
- 5. The value of bulk modulus of a fluid is required to determine
Options- A. Reynold's number
- B. Froude's number
- C. Mach number
- D. Euler's number Discuss
- 6. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
Options- A. neutral equilibrium
- B. stable equilibrium
- C. unstable equilibrium
- D. none of these Discuss
- 7. The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)
Options- A. w x Q x H
- B. w x Q x hf
- C. w x Q (H - hf)
- D. w x Q (H + hf) Discuss
- 8. Which of the following is an example of laminar flow?
Options- A. Under ground flow
- B. Flow past tiny bodies
- C. Flow of oil in measuring instruments
- D. all of these Discuss
- 9. The stability of a dam is checked for
Options- A. tension at the base
- B. overturning of the wall or dam
- C. sliding of the wall or dam
- D. all of these Discuss
- 10. In order to measure the flow with a venturimeter, it is installed in
Options- A. horizontal line
- B. inclined line with flow upwards
- C. inclined line with flow downwards
- D. any direction and in any location Discuss
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: 16/RN
Correct Answer: higher
Correct Answer: 0.855
Correct Answer: directly proportional
Correct Answer: Mach number
Correct Answer: stable equilibrium
Correct Answer: w x Q (H - hf)
Correct Answer: all of these
Correct Answer: all of these
Correct Answer: any direction and in any location
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