Discussion
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- Question
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)
Options- A. Q = Cd x a x 2gh
- B.
- C.
- D.
- Correct Answer
- Q = Cd x a x 2gh
- 1. In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.
Options- A. equal to
- B. one-fourth
- C. one-third
- D. one-half Discuss
- 2. The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)
Options- A.
- B.
- C.
- D.
Discuss
- 3. A flow through an expanding tube at increasing rate is called unsteady non-uniform flow.
Options- A. Yes
- B. No Discuss
- 4. The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to
Options- A. half the depth
- B. half the breadth
- C. twice the depth
- D. twice the breadth Discuss
- 5. Which of the following statement is correct?
Options- A. In a compressible flow, the volume of the flowing liquid changes during the flow.
- B. A flow in which the volume of the flowing liquid does not change, is called incompressible flow.
- C. When the particles rotate about their own axes while flowing, the flow is said to be rotational flow.
- D. all of the above Discuss
- 6. An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.
Options- A. equal to
- B. directly proportional
- C. inversely proportional Discuss
- 7. The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called
Options- A. Newton's law of motion
- B. Newton's law of cooling
- C. Newton's law of viscosity
- D. Newton's law of resistance Discuss
- 8. The flow in a pipe is turbulent when Reynold number is
Options- A. less than 2000
- B. between 2000 and 2800
- C. more than 2800
- D. none of these Discuss
- 9. The specific weight of sea water is __________ that of pure water.
Options- A. same as
- B. less than
- C. more than Discuss
- 10. According to Pascal's law, the intensity of pressure at any point in a fluid at rest is the same in all directions.
Options- A. Agree
- B. Disagree Discuss
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: one-fourth
Correct Answer:
Correct Answer: Yes
Correct Answer: half the depth
Correct Answer: all of the above
Correct Answer: directly proportional
Correct Answer: Newton's law of resistance
Correct Answer: more than 2800
Correct Answer: more than
Correct Answer: Agree
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