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. *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 2 / 50 2. *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 3 / 50 3. 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 4 / 50 4. The section of the Jet leaving an orifice, having the minimum cross-section area, is called a) orifice meter b) venturimeter c) mouthpiece d) vena contracta 5 / 50 5. *The pressure in pipe flow is normally a) less than atmospheric pressure b) equal to atmospheric pressure c) more than atmospheric pressure d) none of the above 6 / 50 6. The profile of rising water on the upstream side of the dam is called a) back water curve b) forwater curve c) normal water curve d) all of the above 7 / 50 7. If the density of a fluid is constant from point to point in a flow region, it is called a) steady flow b) incompressible flow c) uniform flow d) rotational flow 8 / 50 8. *Venturimeter is used to measure a) rate of flow b) velocity c) depth of flow d) all of the above 9 / 50 9. 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 10 / 50 10. If the specific gravity of oil is 0.7, then find the density of oil a) 1000 kg/cm^3 b) 900 kg/cm^3 c) 800 kg/cm^3 d) 700 kg/cm^3 11 / 50 11. A ideal fluid a) is frictionless and incompressible b) obey Newton's law of viscosity c) is similar to gas d) is very viscous 12 / 50 12. *The notch angle for the maximum discharge over a triangular notch is a) 30° b) 60° c) 90° d) 120° 13 / 50 13. 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] 14 / 50 14. *The most economical section of a circular channel for the maximum velocity is when a) depth of water = 0.810 diameter b) hydraulic mean depth = 0.304 diameter of the circular section c) wetted perimeter = 2.245 diameters of the circular section d) all of the above 15 / 50 15. If the fluid particles move in a zig-zag way, the flow is called a) unsteady b) non-uniform c) turbulent d) incompressible 16 / 50 16. The numerical value of vorticity is.....of the rotation a) twice b) thrice c) same d) all of the above 17 / 50 17. The depth of flow at which the specific energy is minimum is called a) normal depth b) critical depth c) alternate depth d) all of the above 18 / 50 18. 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 19 / 50 19. *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 20 / 50 20. *The orifice used for low discharge is a) rectangular b) circular c) square d) triangular 21 / 50 21. *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 22 / 50 22. 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 23 / 50 23. *The difference between the total energy line and the hydraulic gradient line is a) kinetic head b) pressure head c) datum head d) loss of head 24 / 50 24. Hooke's law for solids is analogous to a) Newton's law of viscosity b) Pascal's law c) Boundary layer theory d) continuity equation 25 / 50 25. 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 26 / 50 26. Falling drops of water become spheres due to a) adhesion b) cohesion c) surface tension d) viscosity 27 / 50 27. *1 m head is equivalent to a) 0.1 kg/cm^2 b) 0.2 kg/cm^2 c) 0.3 kg/cm^2 d) 0.4 kg/cm^2 28 / 50 28. *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 29 / 50 29. In an open tube, the free surface of mercury remains a) horizontal b) curved upwards c) curved downwards d) none of the above 30 / 50 30. A triangular notch is preferred to a rectangular notch because a) only one reading is required b) its formula is simple to remember c) it gives more accurate results for low discharge (Q≤100m^3/sec) d) it measures a wide range of flows accurately 31 / 50 31. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a triangular notch is a) 2/3 b) 3/2 c) 2/5 d) 5/2 32 / 50 32. 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.) a) 2σ/d b) 4σ/d c) 6σ/d d) 8σ/d 33 / 50 33. 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 34 / 50 34. Gauge pressure is a) absolute - atmosphere b) absolute + atmosphere c) atmospheric ± absolute d) none of the above 35 / 50 35. Which of the following quantities are dimensionless? a) surface tension b) specific weight c) angular velocity d) Mach number 36 / 50 36. 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 37 / 50 37. Euler's number is the ratio of a) inertia force to pressure force b) pressure force to elastic force c) elastic force to viscous force d) viscous force to inertia force 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. *To measure very low pressure, we use: a) barometers b) piezometers c) monometers d) differential manometers 40 / 50 40. *The atmospheric pressure varies with a) altitude b) temperature c) weather conditions d) none of the above 41 / 50 41. The viscosity of liquids varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 42 / 50 42. The upward water pressure at the base of the structure is called a) up b) down c) uplist d) downlift 43 / 50 43. *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 44 / 50 44. An intensifier is used to increase a) pressure b) temperature c) energy d) none of the above 45 / 50 45. From a nozzle exposed to the atmosphere, the liquid jet traverses a) a straight line b) a circular path c) a parabolic path d) an elliptical path 46 / 50 46. *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 47 / 50 47. *Stoke is the unit of a) surface tension b) viscosity c) kinematic viscosity d) none of the above 48 / 50 48. In an inclined position, a venturimeter records a) less reading b) same reading c) more reading d) none of the above 49 / 50 49. *The specific weight of water 1000 kg/m^3 a) at normal pressure of 760 mm b) at 4°C temperature c) at mean sea level d) all of the above 50 / 50 50. 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 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