Discussion
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- Question
Coefficient of velocity is defined as the ratio of
Options- A. actual velocity of jet at vena contracta to the theoretical velocity
- B. area of jet at vena contracta to the area of orifice
- C. actual discharge through an orifice to the theoretical discharge
- D. none of the above
- Correct Answer
- actual velocity of jet at vena contracta to the theoretical velocity
- 1. When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.
Options- A. sum
- B. difference
- C. arithmatic mean
- D. geometric mean Discuss
- 2. The D-Alembert's principle is used for changing the dynamic equilibrium of a fluid mass, into a static equilibrium.
Options- A. Agree
- B. Disagree Discuss
- 3. The surface tension of mercury at normal temperature is __________ that of water.
Options- A. same as
- B. lower than
- C. higher than Discuss
- 4. A differential manometer is used to measure
Options- A. atmospheric pressure
- B. pressure in pipes and channels
- C. pressure in venturimeter
- D. difference of pressures between two points in a pipe Discuss
- 5. The volume of a fluid __________ as the pressure increases.
Options- A. remains same
- B. decreases
- C. increases Discuss
- 6. A flow is called sonic, if the Mach number is unity.
Options- A. Agree
- B. Disagree Discuss
- 7. The property of a liquid which controls its rate of flow is called viscosity.
Options- A. True
- B. False Discuss
- 8. An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch,
Options- A. 1%
- B. 1.5%
- C. 2%
- D. 2.5% Discuss
- 9. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?
Options- A. The pressure on the wall at the liquid level is minimum.
- B. The pressure on the bottom of the wall is maximum.
- C. The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum
- D. The pressure on the bottom of the wall is zero. Discuss
- 10. An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.
Options- A. less than twice
- B. more than twice
- C. less than three times
- D. more than three times Discuss
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: difference
Correct Answer: Agree
Correct Answer: higher than
Correct Answer: difference of pressures between two points in a pipe
Correct Answer: decreases
Correct Answer: Agree
Correct Answer: True
Correct Answer: 2.5%
Correct Answer: The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum
Correct Answer: less than three times
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