Discussion
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- Question
The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is
Options- A. 200 kg/m3
- B. 400 kg/m3
- C. 600 kg/m3
- D. 800 kg/m3
- Correct Answer
- 800 kg/m3
- 1. The metacentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is
Options- A. 4.1 s
- B. 5.2 s
- C. 10.4 s
- D. 14.1 s Discuss
- 2. A notch is used to measure __________ of liquids.
Options- A. pressure
- B. discharge
- C. velocity
- D. volume Discuss
- 3. The product of mass and accelaration of flowing liquid is called
Options- A. inertia force
- B. viscous force
- C. gravity force
- D. pressure force Discuss
- 4. A manometer is used to measure
Options- A. atmospneric pressure
- B. pressure in pipes and channels
- C. pressure in venturimeter
- D. difference of pressures between two points in a pipe Discuss
- 5. When the Mach number is between __________ the flow is called super-sonic flow.
Options- A. 1 and 2.5
- B. 2.5 and 4
- C. 4 and 6
- D. 1 and 6 Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. 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
- 10. 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
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: 10.4 s
Correct Answer: discharge
Correct Answer: inertia force
Correct Answer: pressure in pipes and channels
Correct Answer: 1 and 6
Correct Answer: Q = Cd x b ( H2 - H1 ) 2gh
Correct Answer:
Correct Answer: 1.417 H5/2
Correct Answer: centre of pressure
Correct Answer: square of velocity
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