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 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 2 / 50 2. Practical fluids possess a) viscosity b) surface tension c) compressibility d) all of the above 3 / 50 3. *The upper surface of the weir over which water flows is known as: a) vein b) nappe c) sill d) none of the above 4 / 50 4. *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 5 / 50 5. For the laminar flow through a circular pipe, the maximum velocity is a) the maximum velocity=1.5 times the average velocity b) the maximum velocity=2.0 times the average velocity c) the maximum velocity=2.5 times the average velocity d) none of the above 6 / 50 6. 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 7 / 50 7. *The discharge through a trapezoidal channel is maximum when a) m = d b) m = 2d c) m = 3d d) m = d/2 8 / 50 8. *The notch angle for the maximum discharge over a triangular notch is a) 30° b) 60° c) 90° d) 120° 9 / 50 9. "Maximum efficiency of power transmission through a pipe is a) 50% b) 60% c) 66% d) 76% 10 / 50 10. Falling drops of water become spheres due to a) adhesion b) cohesion c) surface tension d) viscosity 11 / 50 11. *Total energy line (T.E.L) represents the sum of a) pressure head and kinetic head b) kinetic head and datum head c) pressure head and datum head d) pressure head, kinetic head, and datum head 12 / 50 12. In a flowing liquid, a particle may possess a) potential energy b) kinetic energy c) pressure energy d) all of the above 13 / 50 13. *Bernoulli's theorem deals with the law of conservation of a) energy b) all of the above c) mass d) momentum 14 / 50 14. Gauge pressure is a) absolute - atmosphere b) absolute + atmosphere c) atmospheric ± absolute d) none of the above 15 / 50 15. 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 16 / 50 16. 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 17 / 50 17. 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 18 / 50 18. *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 19 / 50 19. *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 20 / 50 20. In a venturimeter, the divergent cone is kept a) shorter than the convergent cone b) longer than the convergent cone c) equal to the convergent cone d) none of the above 21 / 50 21. *The orifice used for low discharge is a) rectangular b) circular c) square d) triangular 22 / 50 22. 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 23 / 50 23. *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 24 / 50 24. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 25 / 50 25. 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 26 / 50 26. *Capillarity of water is a) directly proportional to surface tension b) inversely proportional to the angle of contact c) inversely proportional to the diameter of the pipe d) all of the above 27 / 50 27. *If the velocity, pressure, density, etc., change at a point with respect to time, the flow is called a) uniform b) compressible c) unsteady d) incompressible 28 / 50 28. 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 29 / 50 29. Pick up the correct statement from the following a) total energy gradient is the graphical representation of the total head at any section of a pipeline b) vertical distance between the total energy line and hydraulic grade line is equal to the velocity head c) vertical distance between the total energy line and total energy gradient represents the loss of head d) all of the above 30 / 50 30. 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 31 / 50 31. 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 32 / 50 32. *Barometers are used to measure a) pressure in water channels, pipes, etc. b) difference in pressure at two points c) atmospheric pressure d) very low pressure 33 / 50 33. *Cavitations is caused by a) low pressure b) high pressure c) low velocity d) high velocity 34 / 50 34. *The float method is used to measure a) the discharge in an open channel b) the velocity in an open channel c) discharge open in an open channel d) all of the above 35 / 50 35. 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 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 difference in pressure head measured by a mercury-oil differential manometer for a 20 cm difference of mercury level will be (specific gravity of oil-0.8) a) 2.72m of oil b) 2.52m of oil c) 3.20m of oil d) 0.2m of oil 38 / 50 38. *Piezometers are used to measure a) pressure in water channels, pipes, etc. b) difference in pressure at two points c) atmospheric pressure d) very low pressure 39 / 50 39. The inlet length of a venturimeter a) is equal to the outlet length b) is more than the outlet length c) is less than the outlet length d) none of the above 40 / 50 40. The Manning's formula for flow in an open channel is given by a) v = n R^2/3 S^1/2 b) none of the above c) v = 1/n R^2/3 S^1/2 d) v = 1/n R^1/2 S^2/3 41 / 50 41. The total energy of a liquid in motion is equal to: a) pressure energy + kinetic energy + potential energy b) pressure energy - (kinetic energy + potential energy) c) potential energy - (pressure energy + kinetic energy) d) kinetic energy - (pressure energy + potential energy) 42 / 50 42. *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 43 / 50 43. *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 44 / 50 44. 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 45 / 50 45. *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> 46 / 50 46. *Surface tension is the force a) per unit length b) per unit area c) per unit volume d) all of the above 47 / 50 47. A fluid particle may possess the displacement of a) translation b) rotation c) distortion d) all of the above 48 / 50 48. *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 49 / 50 49. *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 50 / 50 50. *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 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