Home» Online Test » Civil Engineering » Hydraulics Online Test » Paper 1 » Paper 2 » Paper 3 0% Sorry, time's up. To complete the online test, please restart it. Created by Vikash chaudhary This is a FREE online test. Beware of scammers who ask for money to attend this test. Get fresh, new questions in each attempt. Total Questions: 50 Time Allotted: 50 minutes Passing Score: 70% Randomization: Yes Certificate: Yes Do not refresh the page! 👍 All the best! 1 / 50 1. A siphon is used a) to connect water reservoirs at different levels intervened by a hill b) to supply water to a town from a higher level to a lower level c) to fill up a tank with water at a higher level from a lower level d) none of the above 2 / 50 2. If the total head of the nozzle of a pipe is 37.5m and the discharge is 1 cubic meter per second, then the power generated is a) 500 HP b) 550 HP c) 400 HP d) 450 HP 3 / 50 3. *The continuity equation deals with the law of conservation of a) mass b) momentum c) energy d) force 4 / 50 4. *Which of the following statements is valid? a) a fluid with low viscosity resists motion because its molecular structure gives it a lot of internal friction b) viscosity describes the internal friction of a moving fluid c) two fluids with the same dynamic viscosities have the same kinematic viscosities irrespective of their densities d) intensity of liquid pressure at the bottom of a tank is w.g.h/3 5 / 50 5. *The floating method is used for the measurement of a) discharge b) head c) pressure d) none of the above 6 / 50 6. The head of water representing in the case of HGL line is known as a) static head b) residual head c) pressure head d) all of the above 7 / 50 7. Critical depth (he) is given by (where q= rate of flow per unit width of channel) a) (q^2/g)^1/3 b) (q^2/g)^1/4 c) (q^2/g)^1/2 d) none of the above 8 / 50 8. The two depths at which the specific energy is the same are called a) alternate depths b) conjugate depths c) critical depths d) normal depths 9 / 50 9. For uniform flow in the channel a) the total energy line, hydraulic gradient line, and the bottom of the channel are parallel b) the total energy line and water surface are horizontal, while the bottom of the channel is inclined c) total energy line, water surface, and the bottom of the channel are parallel d) none of the above 10 / 50 10. Water hammer is a phenomenon that occurs a) when pressure increases sudden closure of the valve b) when pressure decreases sudden opening of the valve c) due to the elastic material of the pipe d) due to the incompressible nature of the fluid 11 / 50 11. One horsepower is equal to a) 1 kW b) 0.746 kW c) 0.836 kW d) 0.756 kW 12 / 50 12. *The difference between the total energy gradient line and the total energy line is a) kinetic head b) pressure head c) datum head d) loss of head 13 / 50 13. In the case of a broad-crested weir, the depth of water h at the end of the still is given by a) h = H/2 b) h = 2H/3 c) h = 3H/4 d) h = H 14 / 50 14. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as: a) submerged weir b) narrow-crested weir c) broad-crested weir d) ogee weir 15 / 50 15. 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 a) hydraulic gradient b) piezometric line c) pressure grade line d) all of the above 16 / 50 16. *The width of a weir with end contraction is a) equal to the width of the channel b) less than the width of the channel c) half the width of the channel d) none of the above 17 / 50 17. Crest of a weir is lower than d/s water level a) submerged weir b) Cipolletti weir c) triangular weir d) sharp-crested weir 18 / 50 18. *The hydraulic radius is equal to a) area divided by the square of the wetted perimeter b) wetted area divided by the wetted perimeter c) the wetted perimeter divided by the area d) the square root of the area 19 / 50 19. *The wetted perimeter of a channel is given by a) 4.75Q^2 b) 4.75Q c) 4.75√Q d) none of the above 20 / 50 20. *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 a) hydraulic jump b) standing wave c) both (a) and (b) above d) water cushion 21 / 50 21. For the same specific force, the two depths at which the same discharge occurs are called a) alternate depths b) conjugate depths c) critical depths d) normal depths 22 / 50 22. Liquids a) cannot be compressed b) do not occupy definite shape c) are not affected by change in pressure and temperature d) none of the above 23 / 50 23. In an open tube, the free surface of mercury remains a) horizontal b) curved upwards c) curved downwards d) none of the above 24 / 50 24. To ensure that water does not rise more than 100 cm above the crest, for a discharge of 5.00 m^3/sec, the length of the weir will be (Cd = 0.62) a) 2.48 m b) 2.73 m c) 2.50 m d) 2.51 m 25 / 50 25. *The discharge through a trapezoidal channel is maximum when a) half of the width = sloping side b) top width = 1/2 sloping side c) top width = 1.5 sloping side d) none of the above 26 / 50 26. A siphon is an a) L-shaped pipe b) U-shaped pipe c) inverted U-shaped pipe d) all of the above 27 / 50 27. If the pressure is applied to the surface of a liquid, the liquid transmits the pressure equally in all directions is given by a) Pascal b) Newton c) Archimedes d) all of the above 28 / 50 28. A substance which deforms continuously under the action of shear stress is called a) fluid b) liquid c) solid d) gas 29 / 50 29. *If the velocity, pressure, density, etc., do not change at a point with respect to time, the flow is called a) uniform b) incompressible c) non-uniform d) steady 30 / 50 30. Gauge pressure is a) absolute - atmosphere b) absolute + atmosphere c) atmospheric ± absolute d) none of the above 31 / 50 31. *The actual velocity through an orifice is........... than the theoretical velocity. a) more b) less c) equal d) not defined 32 / 50 32. Specific weight of liquid a) remains constant at every place b) does not remain constant at every place c) varies from place to place d) does not vary on any other planet except earth 33 / 50 33. *The energy possessed by a fluid by virtue of its existing pressure is called a) elevation energy b) kinetic energy c) potential energy d) all of the above 34 / 50 34. *Pressure head is given by a) P/w b) z c) v/2g d) all 35 / 50 35. When the fluid is at rest, the shear stress is a) maximum b) zero c) unpredictable d) none of the above 36 / 50 36. Specific weight of sea water is more than that of pure water because of a) dissolved air b) dissolved salts c) suspended matter d) all of the above 37 / 50 37. *The magnitude of water hammer depends upon a) the length of the pipeline b) elastic properties of liquid c) elastic properties of the pipe material d) diameter of the pipeline 38 / 50 38. The hydrostatic force exerted by 2 m deep water on the gate downstream is equal to a) 40 kN b) 10 kN c) 20 kN d) 30 kN 39 / 50 39. At the vena contracta, the jet has the minimum cross-sectional area, and so the velocity of the liquid at this section will be a) minimum b) maximum c) average d) critical 40 / 50 40. Discharge over an ogee weir remains the same as that of a) sharp-crested weir b) triangular weir c) Cipolleti weir d) drowned weir 41 / 50 41. Water belongs to a) compressible fluids b) none of the above c) Newtonian fluids d) non-Newtonian fluids 42 / 50 42. 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 a) Reynold number b) Froude number c) Weber number d) Mach number 43 / 50 43. *The rate of flow through a V-notch varies as: a) H b) H<sup>1/2</sup> c) H<sup>3/2</sup> d) H<sup>5/2</sup> 44 / 50 44. A fluid particle may possess the displacement of a) translation b) rotation c) distortion d) all of the above 45 / 50 45. *If a pitot tube is placed with its nose facing sideways, the liquid a) rises in the tube b) falls in the tube c) neither rises nor falls in the tube d) all of the above 46 / 50 46. Which of the following has the highest coefficient of discharge: a) sharp-edged orifice b) venturimeter c) cipolleti weir d) borda's mouthpiece running full 47 / 50 47. For the flow of liquid from an open-ended tube (nozzle) leading to the formation of a spray of liquid drops, the number generally is a) Euler number b) Froude number c) Weber number d) Reynolds number 48 / 50 48. The depth of flow after the hydraulic jump is a) d2 = d1/2 [√1+8(Fe)1^2 -1] b) d1 = d2/2 [√1+8(Fe)1^2 -1] c) d2 = d1/3 [√1+8(Fe)1^2 -1] d) d2 = d1/2 [√1+2(Fe)1^2 -1] 49 / 50 49. In fluids, steady flow occurs when a) the condition of flow change steadily with time b) the condition of flow do not change with time c) the condition of flow remains the same at adjacent points d) the velocity vector remains constant at a point 50 / 50 50. Cavitations is collapsed by a) low pressure b) high pressure c) low velocity d) high velocity Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score isShare your achievement! LinkedIn Facebook 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. 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