Hydraulics and Fluid Mechanics problems
- 1. The flow in a pipe or channel is said to be uniform when
Options- A. the liquid particles at all sectons have the same velocities
- B. the liquid particles at different sections have different velocities
- C. the quantity of liquid flowing per second is constant
- D. each liquid particle has a definite path Discuss
Correct Answer: the liquid particles at all sectons have the same velocities
- 2. The depth of centre of pressure lor an immersed surface inclined at an angle ? with the liquid surface lies at a distance equal to __________ the centre of gravity.
Options- A.
below - B. above
- C.
below - D. above
Discuss
Correct Answer:
below - 3. The length of a liquid stream while flowing over a weir __________ at the ends of the sill.
Options- A. expands
- B. does not change
- C. contracts Discuss
Correct Answer: contracts
- 4. The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.
Options- A. decreases
- B. increases Discuss
Correct Answer: increases
- 5. A flow through an expanding tube at constant rate is called
Options- A. steady uniform flow
- B. steady non-uniform flow
- C. unsteady uniform flow
- D. unsteady non-uniform flow Discuss
Correct Answer: steady non-uniform flow
- 6. When a body is placed over a liquid, it is subjected to gravitational force and upthrust of the liquid.
Options- A. True
- B. False Discuss
Correct Answer: True
- 7. The critical depth meter is used to measure
Options- A. velocity of flow in an open channel
- B. depth of flow in an open channel
- C. hydraulic jump
- D. depth of channel Discuss
Correct Answer: hydraulic jump
- 8. One cubic metre of water weighs
Options- A. 100 litres
- B. 250 litres
- C. 500 litres
- D. 1000 litres Discuss
Correct Answer: 1000 litres
- 9. The centre of pressure acts __________ the centre of gravity of immersed surface.
Options- A. at
- B. above
- C. below Discuss
Correct Answer: below
- 10. The highest efficiency is obtained with a channel of __________ section.
Options- A. circular
- B. square
- C. rectangular
- D. trapezoidal Discuss
Correct Answer: trapezoidal
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