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. If the velocity in a fluid flow changes with respect to the length of the direction of the flow, it is called a) unsteady flow b) compressible flow c) rotational flow d) none of the above 2 / 50 2. *In flow, the liquid particles may possess a) potential energy b) kinetic energy c) pressure energy d) all of the above 3 / 50 3. The term z is known as a) potential energy b) pressure energy c) potential energy per unit weight d) none of the above 4 / 50 4. *The condition for the maximum velocity and discharge is given by (closed flow) a) 0.81D & 0.95D b) 0.82D & 0.94D c) 0.83D & 0.93D d) 0.84D & 0.92D 5 / 50 5. *The hydraulic ram is a device a) for lifting water without an electric motor b) for accelerating water flow c) for lifting heavy loads d) none of the above 6 / 50 6. Total head of a particle in motion is the sum of a) potential head and kinetic head b) kinetic head and pressure head c) potential head and pressure head d) potential head, kinetic head, and pressure head 7 / 50 7. Mass density of liquid (p) is given by a) p = mass/volume b) p = metric slug/m^2 c) p = kgsec^3/m^4 d) all of the above 8 / 50 8. 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 9 / 50 9. The viscosity of liquids varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 10 / 50 10. *If a pitot tube is placed with its nose facing downstream, the liquid a) does not rise in the tube b) rises in the tube to a height √v^2/sg c) falls in the tube to a depth √v^2/2g d) none of the above 11 / 50 11. *The atmospheric pressure varies with a) altitude b) temperature c) weather conditions d) none of the above 12 / 50 12. Super-critical flow occurs in a) normal slope b) mild slope c) steep slope d) all of the above 13 / 50 13. *An ideal flow of a liquid obeys a) continuity equation b) Newton's second law of viscosity c) Newton's second law of motion d) dynamic viscosity 14 / 50 14. To avoid an interruption in the flow of a siphon, the air vessel is provided a) at the inlet b) at the outlet c) at the summit d) at the point between the inlet and outlet 15 / 50 15. *Head loss increases with a) an increase in velocity b) a decrease in velocity c) a decrease in length of the pipe d) an increase in the diameter of the pipe 16 / 50 16. If the Froude number in open channel flow is equal to 1.0, the flow is called a) critical flow b) streaming flow c) shooting flow d) none of the above 17 / 50 17. *The orifice used for low discharge is a) rectangular b) circular c) square d) triangular 18 / 50 18. 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 19 / 50 19. *The equation of continuity of fluids is applicable only if a) the flow is steady b) the flow is in-compressible c) the flow is one-dimensional d) all of the above 20 / 50 20. *Hydraulic gradient line (except siphon) a) remains above the centerline of the conduit b) remains below the centerline of the conduit c) remains parallel to the centerline of the conduit d) may be above or below the centerline of the conduit 21 / 50 21. *Molecules of fluids get attracted due to a) capillary action b) surface tension c) adhesion d) cohesion 22 / 50 22. The basic head loss in a long pipe is: a) fittings b) sudden increase in diameter c) sudden decrease in diameter d) friction 23 / 50 23. 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 24 / 50 24. The imaginary line drawn such that the tangents at its all points indicate the direction of the velocity of the fluid particle at each point is called a) path line b) stream line c) potential line d) streak line 25 / 50 25. The maximum velocity in an open channel occurs a) at the bottom of the channel b) at 1/2 the depth of the channel c) slightly below the free surface d) at the free surface 26 / 50 26. If fluid or flow parameters at any given instant remain the same at every point in space, it is called: a) steady flow b) laminar flow c) uniform flow d) rotational flow 27 / 50 27. *If the velocity in a fluid flow does not change with respect to the length of the direction of flow, it is called a) steady flow b) uniform flow c) incompressible flow d) rotational flow 28 / 50 28. A fluid particle may possess the displacement of a) translation b) rotation c) distortion d) all of the above 29 / 50 29. 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 30 / 50 30. *To measure atmospheric pressure, we use a) barometers b) piezometer c) manometers d) differential manometers 31 / 50 31. *Bernoulli's equation is applied to a) venturimeter b) orifice meter c) pitot tube d) all of the above 32 / 50 32. *The discharge through a trapezoidal channel is maximum when a) m = d b) m = 2d c) m = 3d d) m = d/2 33 / 50 33. In the case of leveling by a level pipe, the level is indicated by a) upper face b) middle face c) lower face d) all of the above 34 / 50 34. A substance which deforms continuously under the action of shear stress is called a) fluid b) liquid c) solid d) gas 35 / 50 35. *Bernoulli's theorem deals with the law of conservation of a) energy b) all of the above c) mass d) momentum 36 / 50 36. 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 37 / 50 37. Hydrostatic pressure on a dam depends upon its a) length b) depth c) shape d) both (b) and (c) of the above 38 / 50 38. For a circular channel, the wetted perimeter is given by (where θ=half the angle subtended by the water at the center and R= radius of circular channel) a) 2Rθ b) 3Rθ c) 4Rθ d) all of the above 39 / 50 39. Practical fluids possess a) viscosity b) surface tension c) compressibility d) all of the above 40 / 50 40. *Pressure within a soap bubble is a) equal to vapor pressure b) less than external pressure c) more than external pressure d) equal to external pressure 41 / 50 41. In an open channels the analysis of a sugar is done by using a) continuity equation b) momentum equation c) energy equation d) none of the above 42 / 50 42. Open channel flow is a) one in which the liquid is flowing in a conduit and has a free surface b) one in which the liquid is flowing in a closed conduit running full c) a covered channel running full d) one in which the liquid is flowing in a conduit under pressure 43 / 50 43. 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 44 / 50 44. 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 45 / 50 45. *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 a) laminar b) turbulent flow c) uniform flow d) non-uniform flow 46 / 50 46. "Maximum efficiency of power transmission through a pipe is a) 50% b) 60% c) 66% d) 76% 47 / 50 47. The discharge through a V-notch weir is directly proportional to: a) the bed slope of the channel upstream b) the depth of flow c) the top width of the notch d) the angle of the notch and the depth of the flow 48 / 50 48. *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 49 / 50 49. The ratio of the mean velocity to the surface velocity in open channels is equal to a) 0.55 b) 0.75 c) 0.88 d) 1.75 50 / 50 50. For a long pipe, the head loss a) at the entrance is ignored b) at the outlet is ignored c) at the entrance and outlet both are ignored d) due to friction is ignored 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. Send feedback Buy Hydraulics MCQ PDF for Offline Study