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- Question
An orifice is an opening in a vessel with
Options- A. closed perimeter of regular shape through which water flows
- B. the water level of the liquid on the up stream side is below the top of the orifice
- C. partially full flow
- D. prolonged sides having length of 2 to 3 diameters of the opening in thick wall.
- Correct Answer
- closed perimeter of regular shape through which water flows
- 1. The metacentric height of a body equals the distance between
Options- A. the centre of gravity and centre of buoyancy
- B. the metacentre and centre of gravity
- C. the centre of buoyancy and metacentre
- D. none of these. Discuss
- 2. In C.G.S. system the units of kinematic viscosity, is
Options- A. stoke
- B. poise
- C. Newton
- D. none of these. Discuss
- 3. An open container filled with water is moved vertically downward with a uniform linear acceleration. The pressure at its bottom will be
Options- A. greater than static pressure
- B. equal to static pressure
- C. lesser than static pressure
- D. none of these. Discuss
- 4. The most efficient channel section, is
Options- A. semi-circular
- B. rectangular
- C. triangular
- D. half hexagon in the form of trapezoid. Discuss
- 5. The imaginary line drawn such that the tangents at its all points indicate the direction of the velocity of the fluid particles at each point, is called
Options- A. path line
- B. stream line
- C. potential line
- D. streak line. Discuss
- 6. The differential equation dp/? + gdz + vdv = 0 for a fluid motion is suggested by
Options- A. Bernoulli
- B. Cauchy-Riemann
- C. Laplace
- D. Leonard Euler. Discuss
- 7. Pick up the correct statement from the following :
Options- A. For maximum velocity of flow, the depth of water in the circular channel must be 0.81 times the diameter of the channel
- B. For maximum velocity, the hydraulic mean depth must be 0.3 times the diameter of circular channel
- C. For maximum discharge the depth of flow must be 0.95 times the diameter of circular channel
- D. All the above. Discuss
- 8. If v1 and v2 are the velocities of flow before and after sudden enlargement in a pipe, the head loss given by Carnot and Borda equation, is
Options- A. (v22 - v12)/2g
- B. (v1 - v2)2/2g
- C. (v2 - v1)2/2g
- D. (v1 + v2)2/2g. Discuss
- 9. Pick up the correct statement from the following :
Options- A. In incompressible flow the density of a fluid remains constant
- B. In compressible flow, the density of a fluid changes from point to point
- C. In uniform flow, the velocity of a fluid does not change with respect to length of flow direction
- D. All the above. Discuss
- 10. Water flows through a convergent mouthpiece of diameter 4 cm at convergence under a head of 3 metres. If the maximum vacuum pressure is 9 metres of water, the maximum diameter of divergence, to aviod separation of flow, is
Options- A. 4 cm
- B. 6 cm
- C. 2 cm
- D. 23 cm. Discuss
Hydraulics problems
Search Results
Correct Answer: the metacentre and centre of gravity
Correct Answer: stoke
Correct Answer: lesser than static pressure
Correct Answer: half hexagon in the form of trapezoid.
Correct Answer: stream line
Correct Answer: Leonard Euler.
Correct Answer: All the above.
Correct Answer: (v1 - v2)2/2g
Correct Answer: All the above.
Correct Answer: 2 cm
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