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 continuity equation a) expresses the relationship between work and energy b) relates the momentum per unit volume between two points on a stream line c) relates the mass rate of flow along a stream line d) requires that Newton's second law of motion be satisfied at every point in the fluid. 2 / 50 2. *Surface float is used to measure a) pressure b) difference in pressure c) viscosity of flow d) none of the above 3 / 50 3. If S is the height of the crest above the base of the channel and H is the head of water over the weir, whose length is L and discharge is Q m^3/sec, the velocity of approach Va is a) √2gh b) Q/L(H-L) c) Q/L(H+L) d) L(H+S)/Q 4 / 50 4. 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 5 / 50 5. The upward water pressure at the base of the structure is called a) up b) down c) uplist d) downlift 6 / 50 6. 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 7 / 50 7. 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 8 / 50 8. *Stoke is the unit of a) surface tension b) viscosity c) kinematic viscosity d) none of the above 9 / 50 9. 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 10 / 50 10. *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 11 / 50 11. A fluid particle may possess the displacement of a) translation b) rotation c) distortion d) all of the above 12 / 50 12. *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 13 / 50 13. 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 14 / 50 14. Mach number is the ratio of inertia force to a) viscosity b) Froude number c) gravitational force d) elasticity 15 / 50 15. 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 16 / 50 16. 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 17 / 50 17. 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 18 / 50 18. *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 19 / 50 19. *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> 20 / 50 20. If the fluid particles move in straight lines and all the lines are parallel to the surface, the flow is called a) steady b) uniform c) compressible d) laminar 21 / 50 21. Water belongs to a) compressible fluids b) none of the above c) Newtonian fluids d) non-Newtonian fluids 22 / 50 22. *Cipolletti weir is a trapezoidal weir having a side slope of a) H:V::1:2 b) H:V::2:1 c) H:V::1:4 d) none of the above 23 / 50 23. *Molecules of fluids get attracted due to a) capillary action b) surface tension c) adhesion d) cohesion 24 / 50 24. *The magnitude of capillary rise is more in: a) silts b) sands c) clays d) gravels 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. 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 27 / 50 27. If the fluid particles move in a zig-zag way, the flow is called a) unsteady b) non-uniform c) turbulent d) incompressible 28 / 50 28. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 29 / 50 29. *In flow, the liquid particles may possess a) potential energy b) kinetic energy c) pressure energy d) all of the above 30 / 50 30. *Hydraulic gradient is equal to a) difference in water surface / total length of the channel b) total loss due to friction / total length of the channel c) wetted perimeter / total length of the channel d) area of cross-section / total length of the channel 31 / 50 31. 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 32 / 50 32. *The discharge through a rectangular channel is maximum when a) m = d/2 b) d=b/2 c) m=2d d) both (a) and (b) above 33 / 50 33. *Bernoulli's equation assumes that a) fluid is non-viscous b) fluid is homogeneous c) flow is along the streamline d) all of the above 34 / 50 34. *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 35 / 50 35. 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 36 / 50 36. 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 37 / 50 37. In the case of vortex flow, the level of water at the center is a) higher than circumference b) lower than circumference c) same as circumference d) all of the above 38 / 50 38. Hydraulic gradient line and total energy line are a) same b) different c) differ by pressure head d) differ by static head 39 / 50 39. *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 40 / 50 40. An oil of specific gravity 0.7 and pressure 0.14 kgf/cm^2 will have the height of oil as a) 70 cm of oil b) 2 m of oil c) 20 cm of oil d) 80 cm of oil 41 / 50 41. *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 42 / 50 42. The error 1% in measuring H will produce a a) 1% b) 1.5% c) 2% d) 2.5% 43 / 50 43. The most efficient channel section is a) semi-circular b) rectangular c) triangular d) trapezoidal 44 / 50 44. *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 45 / 50 45. *A pitot tube is used to measure a) pressure b) different in pressure c) velocity of flow d) none of the above 46 / 50 46. Practical fluids possess a) viscosity b) surface tension c) compressibility d) all of the above 47 / 50 47. The minimum head loss will occur in a) orifice meter b) venturimeter c) nozzle meter d) none of the above 48 / 50 48. An intensifier is used to increase a) pressure b) temperature c) energy d) none of the above 49 / 50 49. 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 50 / 50 50. Weber number is the ratio of inertia force to a) surface tension b) gravitational force c) elasticity d) viscosity 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