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. 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 2 / 50 2. *The hydraulic ram is a pump that works on a) the principle of water hammer b) the principle of centrifugal action c) the principle of reciprocation action d) all of the above 3 / 50 3. If H is the height of the liquid above the sill, the effect of end contraction on each side, according to Francis' formula, is a) 0.1H b) 0.2H c) 0.3H d) 0.4H 4 / 50 4. If the density of a fluid changes from point to point in a flow region, it is called a) steady flow b) unsteady flow c) non-uniform flow d) compressible flow 5 / 50 5. 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 6 / 50 6. In an inclined pipe, the pressure difference at its two ends is due to a) sudden head drop at the inlet b) exit head drop c) frictional loss head d) all of the above 7 / 50 7. *The discharge passing through the crest having a length of 1.25m, a height of the flow of water 0.25m, and Cd = 0.035 is a) 0.0116 cm³/sec b) 0.116 cm³/sec c) 0.0160 cm³/sec d) 0.00116 cm³/sec 8 / 50 8. *The upper surface of the weir over which water flows is known as: a) vein b) nappe c) sill d) none of the above 9 / 50 9. *The magnitude of capillary rise is more in: a) silts b) sands c) clays d) gravels 10 / 50 10. Total pressure on the top of a closed cylindrical vessel completely filled with liquid is directly proportional to a) radius b) (radius)^2 c) (radius)^3 d) (radius)^4 11 / 50 11. 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 12 / 50 12. The term P/pg is known as a) kinetic energy b) pressure energy per unit weight c) kinetic energy per unit weight d) none of the above 13 / 50 13. 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 14 / 50 14. *The flow in which the path of individual particles of liquid cross each other is called a) uniform flow b) turbulent flow c) stream line flow d) none of the above 15 / 50 15. A steady uniform flow is through a a) long pipe at decreasing rate b) long pipe at constant rate c) long pipe at increasing rate d) none of the above 16 / 50 16. *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 17 / 50 17. Discharge over an ogee weir remains the same as that of a) sharp-crested weir b) triangular weir c) Cipolleti weir d) drowned weir 18 / 50 18. *To measure very low pressure, we use: a) barometers b) piezometers c) monometers d) differential manometers 19 / 50 19. Gauge pressure is a) absolute - atmosphere b) absolute + atmosphere c) atmospheric ± absolute d) none of the above 20 / 50 20. Mouthpieces are used to measure a) velocity b) pressure c) head d) rate of flow 21 / 50 21. *Pressure head is given by a) P/w b) z c) v/2g d) all 22 / 50 22. 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 23 / 50 23. When the pipes are connected in series, the total rate of flow a) is equal to the sum of the rate of flow in each pipe b) is equal to the reciprocal of the sum of the rate of flow in each pipe c) is the same as flowing through each pipe d) none of the above 24 / 50 24. With a clinging nappe of a weir, the excess discharge is a) 6% to 7% b) 8% to 10% c) 12% to 15% d) 25% to 30% 25 / 50 25. *Rotameter is used for measuring a) density of fluids b) value of fluids in a pipe c) discharge of fluids d) pressure in fluids 26 / 50 26. Chazy's formula is used to determine a) head loss due to friction in pipes b) velocity of flow in pipe c) velocity of flow in channels d) none of the above 27 / 50 27. *If the volume of a liquid weighing 2400 kg is 3 cubic meters, then 0.8 is its: a) specific weight b) specific mass c) specific gravity d) none of the above 28 / 50 28. Specific energy of a flowing fluid per unit weight is equal to a) (v^2/2g) + h b) (h^2/2g) + v c) (v^2/2h) + g d) (v^2/3g) + h 29 / 50 29. The viscosity of gases varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 30 / 50 30. Falling drops of water become spheres due to a) adhesion b) cohesion c) surface tension d) viscosity 31 / 50 31. The capillary rise or fall of the liquid is given by a) h = σ cos θ / 4ρgd b) h = 4σ cos θ / ρgd c) h = 8σ cos θ / ρgd d) none of the above 32 / 50 32. 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 33 / 50 33. *Chazy's formula is given by a) v = C√mi b) v = m√ci c) v = C√mci d) v = i√mc 34 / 50 34. *The floating method is used for the measurement of a) discharge b) head c) pressure d) none of the above 35 / 50 35. *The upper surface of the weir over which water flows is known as a) crest b) notch c) top level d) none of the above 36 / 50 36. *The atmospheric pressure varies with a) altitude b) temperature c) weather conditions d) none of the above 37 / 50 37. Water belongs to a) compressible fluids b) none of the above c) Newtonian fluids d) non-Newtonian fluids 38 / 50 38. *Capillary rise is proportional to a) surface tension b) unit weight of water c) diameter of the pipe d) none of the above 39 / 50 39. Rotation is defined as the movement of a fluid element in such a way that both of its axes rotate in... a) the same direction b) different directions c) both of the above d) none of the above 40 / 50 40. *The continuity equation deals with the law of conservation of a) mass b) momentum c) energy d) force 41 / 50 41. *Molecules of fluids get attracted due to a) capillary action b) surface tension c) adhesion d) cohesion 42 / 50 42. *The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid if a) the area is horizontal b) the area is vertical c) the area is inclined d) all of the above 43 / 50 43. *A pitot tube is used to measure a) pressure b) different in pressure c) velocity of flow d) none of the above 44 / 50 44. *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 45 / 50 45. The water immediately downstream of the conduit or weir is called a) head water b) tail water c) main water d) surplus water 46 / 50 46. When the pipes are connected in parallel, the total loss of head a) is equal to the sum of the loss of head in each pipe b) is the same as in each pipe c) is equal to the reciprocal of the sum of the loss of head in each pipe d) none of the above 47 / 50 47. *Hydraulic gradient line (H.G.L.) represents the sum of a) pressure head and kinetic head b) kinetic head and datum head c) pressure head, kinetic head, and datum head d) pressure head and datum head 48 / 50 48. 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 49 / 50 49. Cavitations in flowing fluid occurs when a) the total energy suddenly increases b) the total energy suddenly decreases c) the total energy is constant d) none of the above 50 / 50 50. *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 Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! LinkedIn Facebook Twitter 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. Send feedback Buy Hydraulics MCQ PDF for Offline Study