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Hydraulics Online Test – Paper 3

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Created by 83a36dcfd5c4caff12bc80f0020c9c749e12cbbbdb7c406dc1dd39996cb85836?s=32&d=monsterid&r=g gkaimVikash chaudhary

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  • Total Questions: 50
  • Time Allotted: 50 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
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1. *The upper surface of the notch over which water flows is known as

2 / 50

2. The viscosity of liquids varies with temperature

3 / 50

3. *The discharge through a trapezoidal channel is maximum when

4 / 50

4. The numerical value of vorticity is.....of the rotation

5 / 50

5. Critical depth (he) is given by (where q= rate of flow per unit width of channel)

6 / 50

6. If H is the height of the liquid above the sill, the effect of end contraction on each side, according to Francis' formula, is

7 / 50

7. *Cipolleti weir is a

8 / 50

8. *Pressure head is given by

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9. *If a pitot tube is placed with its nose facing downstream, the liquid

10 / 50

10. *The condition for the maximum velocity and discharge is given by (closed flow)

11 / 50

11. *The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid if

12 / 50

12. Hydrostatic pressure on a dam depends upon its

13 / 50

13. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a triangular notch is

14 / 50

14. Which of the following has the highest coefficient of discharge:

15 / 50

15. In a venturimeter, the divergent cone is kept

16 / 50

16. In an inclined position, a venturimeter records

17 / 50

17. Cavitations in flowing fluid occurs when

18 / 50

18. "Manning's formula is used for

19 / 50

19. *Cavitations is caused by

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20. Find the capillary rise/fall in a glass tube when immersed in mercury with the following given data: surface tension, σ = 0.52 gmf/cm, angle of contact, θ = 130°, S.G. of mercury = 13.6, diameter of the pipe = 2.5 mm.

21 / 50

21. The hydrostatic force exerted by 2 m deep water on the gate downstream is equal to

22 / 50

22. *The energy possessed by a fluid by virtue of its existing pressure is called

23 / 50

23. *The difference between the total energy gradient line and the total energy line is

24 / 50

24. The upward water pressure at the base of the structure is called

25 / 50

25. The inlet length of a venturimeter

26 / 50

26. *If the velocity of fluid particles varies from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be

27 / 50

27. In the case of a broad-crested weir, the depth of water h at the end of the still is given by

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28. Falling drops of water become spheres due to

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29. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as:

30 / 50

30. *Which of the following statements is valid?

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31. Specific energy of a flowing fluid per unit weight is equal to

32 / 50

32. In an open channel flow

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33. A vessel having a depth of 30 cm is filled with water up to a depth of 10 cm from the top level. Find the pressure exerted at a depth of 5 cm and 15 cm from the top of the vessel respectively

34 / 50

34. The maximum velocity in an open channel occurs

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35. If the forces are due to inertia and gravity, and frictional resistance plays only a minor role, the design of channels is made by comparing

36 / 50

36. At the vena contracta, the jet has the minimum cross-sectional area, and so the velocity of the liquid at this section will be

37 / 50

37. Water belongs to

38 / 50

38. One horsepower is equal to

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39. *The equation of continuity of fluids is applicable only if

40 / 50

40. Super-critical flow occurs in

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41. *The flow in which the path of individual particles of liquid cross each other is called

42 / 50

42. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a rectangular notch is

43 / 50

43. *Pressure within a soap bubble is

44 / 50

44. *The notch angle for the maximum discharge over a triangular notch is

45 / 50

45. *Hydraulic gradient line (except siphon)

46 / 50

46. The phenomenon of rising of a liquid surface in a tube of small diameter relative to the adjacent normal level of the liquid is known as

47 / 50

47. *A pitot tube is used to measure

48 / 50

48. A steady uniform flow is through a

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49. To avoid an interruption in the flow of a siphon, the air vessel is provided

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50. *The hydraulic radius is equal to

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