Discussion
Home ‣ Mechanical Engineering ‣ Hydraulics and Fluid Mechanics Comments
- Question
A flow through a long pipe at decreasing rate is called __________ uniform flow.
Options- A. steady
- B. unsteady
- Correct Answer
- unsteady
- 1. 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
- 2. 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
- 3. 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
- 4. 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
- 5. The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)
Options- A. Q = Cd x bH1 2gh
- B. Q = Cd x bH2 2gh
- C. Q = Cd x b ( H2 - H1 ) 2gh
- D. Q = Cd x bH 2gh Discuss
- 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
- 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
- 8. The hydraulic gradient line is always parallel to the centre line of the pipe.
Options- A. Correct
- B. Incorrect Discuss
- 9. The volume of a fluid __________ as the pressure increases.
Options- A. remains same
- B. decreases
- C. increases Discuss
- 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
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: square of velocity
Correct Answer: centre of pressure
Correct Answer: 1.417 H5/2
Correct Answer:
Correct Answer: Q = Cd x b ( H2 - H1 ) 2gh
Correct Answer: pressure energy + kinetic energy + potential energy
Correct Answer: K/?
Correct Answer: Incorrect
Correct Answer: decreases
Correct Answer: difference of pressures between two points in a pipe
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