Hydraulics problems
- 1. The shape of fire hose nozzle is generally kept
Options- A. divergent
- B. convergent
- C. convergent divergent
- D. cylindrical. Discuss
Correct Answer: convergent
- 2. The line joining the points to which the liquid rises in vertical piezometer tubes fitted at different cross-sections of a conduit, is known as
Options- A. hydraulic gradient
- B. piezometric line
- C. pressure grade line
- D. hydraulic grade line
- E. all the above. Discuss
Correct Answer: all the above.
- 3. 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
Correct Answer: stream line
- 4. The most efficient channel section, is
Options- A. semi-circular
- B. rectangular
- C. triangular
- D. half hexagon in the form of trapezoid. Discuss
Correct Answer: half hexagon in the form of trapezoid.
- 5. 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
Correct Answer: lesser than static pressure
- 6. In C.G.S. system the units of kinematic viscosity, is
Options- A. stoke
- B. poise
- C. Newton
- D. none of these. Discuss
Correct Answer: stoke
- 7. 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
Correct Answer: the metacentre and centre of gravity
- 8. 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. Discuss
Correct Answer: closed perimeter of regular shape through which water flows
- 9. 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
Correct Answer: Leonard Euler.
- 10. 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
Correct Answer: All the above.
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