Hydraulics Online Test – Paper 3

1. The head of water representing in the case of HGL line is known as

2. The two depths at which the specific energy is the same are called

3. *Barometers are used to measure

4. *A stepped notch is a combination of

5. Which of the following quantities are dimensionless?

6. An intensifier is used to increase

7. Total pressure on the top of a closed cylindrical vessel completely filled with liquid is directly proportional to

8. As per our convenience which one is correct with respect to the dimensionless number?

9. The pressure difference between inside and outside of a droplet of water is given by (Where σ is surface tension and d is the diameter of the droplet.)

10. *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

11. *Piezometers are used to measure

12. Cavitations is collapsed by

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

14. Euler's number is the ratio of

15. The minimum head loss will occur in

16. *The rate of flow through a V-notch varies as:

17. The multiplying factor for converting one poise into MKS unit of dynamic viscosity is

18. 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

19. The most economical section of a circular channel for the maximum discharge is when

20. Mouthpieces are used to measure

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

22. Hydraulic gradient line and total energy line are

23. Hooke's law for solids is analogous to

24. If the specific gravity of oil is 0.7, then find the density of oil

25. *If a pitot tube is placed with its nose facing sideways, the liquid

26. *Variation in volume of liquid with variation in pressure is called

27. *Losses are more in

28. *The rise of the water table, which takes place due to the transformation of the unstable shooting flow (super-critical) to the stable streaming is called

29. Hydraulic gradient line for an open flow channel is

30. "Maximum efficiency of power transmission through a pipe is

31. In the case of leveling by a level pipe, the level is indicated by

32. In a venturimeter, the divergent cone is kept

33. *Manometers are used to measure

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

35. The total energy of a liquid in motion is equal to:

36. In the case of vortex flow, the level of water at the center is

37. *The upper surface of the weir over which water flows is known as

38. *The discharge passing through the crest having a length of 1.25m, a height of the flow of water 0.25m, and C_d = 0.035 is

39. *If the velocity, pressure, density, etc., change at a point with respect to time, the flow is called

40. *The specific weight of water 1000 kg/m^3

41. A steady uniform flow is through a

42. *Surface float is used to measure

43. If the pressure is applied to the surface of a liquid, the liquid transmits the pressure equally in all directions is given by

44. *To measure atmospheric pressure, we use

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

46. In an inclined position, a venturimeter records

47. The basic head loss in a long pipe is:

48. Practical fluids possess

49. *The orifice used for low discharge is

50. The ratio of the inertia and gravitational force acting in any flow, ignoring other forces, is called