Discussion
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- Question
When a body is placed over a liquid, it is subjected to gravitational force and upthrust of the liquid.
Options- A. True
- B. False
- Correct Answer
- True
- 1. 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
- 2. The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.
Options- A. decreases
- B. increases Discuss
- 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
- 4. 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
- 5. 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
- 6. 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
- 7. One cubic metre of water weighs
Options- A. 100 litres
- B. 250 litres
- C. 500 litres
- D. 1000 litres Discuss
- 8. The centre of pressure acts __________ the centre of gravity of immersed surface.
Options- A. at
- B. above
- C. below Discuss
- 9. The highest efficiency is obtained with a channel of __________ section.
Options- A. circular
- B. square
- C. rectangular
- D. trapezoidal Discuss
- 10. The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)
Options- A. wH/2
- B. wH
- C. wH2/2
- D. wH2/4 Discuss
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer: steady non-uniform flow
Correct Answer: increases
Correct Answer: contracts
Correct Answer:
below Correct Answer: the liquid particles at all sectons have the same velocities
Correct Answer: hydraulic jump
Correct Answer: 1000 litres
Correct Answer: below
Correct Answer: trapezoidal
Correct Answer: wH2/2
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