Hydraulics and Fluid Mechanics problems
- 1. According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2 where m is equal to
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 2. If the coefficient of discharge is 0.6, then the discharge over a right angled notch is
Options- A. 0.417 H5/2
- B. 1.417 H5/2
- C. 4.171 H5/2
- D. 7.141 H5/2 Discuss
Correct Answer: 1.417 H5/2
- 3. The point at which the resultant pressure on an immersed surface acts, is known as
Options- A. centre of gravity
- B. centre of depth
- C. centre of pressure
- D. centre of immersed surface Discuss
Correct Answer: centre of pressure
- 4. The factional resistance of a pipe varies approximately with __________ of the liquid.
Options- A. pressure
- B. velocity
- C. square of velocity
- D. cube of velocity Discuss
Correct Answer: square of velocity
- 5. A flow through a long pipe at decreasing rate is called __________ uniform flow.
Options- A. steady
- B. unsteady Discuss
Correct Answer: unsteady
- 6. The total energy of a liquid particle in motion is equal to
Options- A. pressure energy + kinetic energy + potential energy
- B. pressure energy - (kinetic energy + potential energy)
- C. potential energy - (pressure energy + kinetic energy
- D. kinetic energy - (pressure energy + potential energy) Discuss
Correct Answer: pressure energy + kinetic energy + potential energy
- 7. The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ? = Density of the fluid)
Options- A. K.?
- B. K/?
- C. ?/K
- D. K.? Discuss
Correct Answer: K/?
- 8. The hydraulic gradient line is always parallel to the centre line of the pipe.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Incorrect
- 9. The volume of a fluid __________ as the pressure increases.
Options- A. remains same
- B. decreases
- C. increases Discuss
Correct Answer: decreases
- 10. 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
Correct Answer: difference of pressures between two points in a pipe
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