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. *Cipolleti weir is a a) rectangular weir whose length is kept 3 times the height of the water above the sill b) triangular weir, whose notch angle is 90° c) trapezoidal weir, whose sides slope 1 horizontal to 4 verticals d) a combination of rectangular and triangular weirs 2 / 50 2. 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 3 / 50 3. Cavitations is collapsed by a) low pressure b) high pressure c) low velocity d) high velocity 4 / 50 4. *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 5 / 50 5. 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 6 / 50 6. 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 7 / 50 7. *Venturimeter is used to measure a) rate of flow b) velocity c) depth of flow d) all of the above 8 / 50 8. *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 9 / 50 9. *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 10 / 50 10. *Surface tension is the force a) per unit length b) per unit area c) per unit volume d) all of the above 11 / 50 11. When the fluid is at rest, the shear stress is a) maximum b) zero c) unpredictable 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. *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 14 / 50 14. A ideal fluid a) is frictionless and incompressible b) obey Newton's law of viscosity c) is similar to gas d) is very viscous 15 / 50 15. *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 16 / 50 16. *The upper surface of the notch over which water flows is known as a) vein b) nappe c) sill d) none of the above 17 / 50 17. *Variation in volume of liquid with variation in pressure is called a) plasticity b) viscosity c) compressibility d) none of the above 18 / 50 18. *Differential manometers are used to measure a) pressure in water channels b) difference in pressure at two points c) atmospheric pressure d) very low pressure 19 / 50 19. *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 20 / 50 20. *To measure atmospheric pressure, we use a) barometers b) piezometer c) manometers d) differential manometers 21 / 50 21. 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 22 / 50 22. *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 23 / 50 23. 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 24 / 50 24. 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 25 / 50 25. 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 26 / 50 26. *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 27 / 50 27. *The continuity equation deals with the law of conservation of a) mass b) momentum c) energy d) force 28 / 50 28. The term z is known as a) potential energy b) pressure energy c) potential energy per unit weight d) none of the above 29 / 50 29. *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 30 / 50 30. *Bernoulli's theorem deals with the law of conservation of a) energy b) all of the above c) mass d) momentum 31 / 50 31. *The magnitude of capillary rise is more in: a) silts b) sands c) clays d) gravels 32 / 50 32. *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 33 / 50 33. Falling drops of water become spheres due to a) adhesion b) cohesion c) surface tension d) viscosity 34 / 50 34. *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 35 / 50 35. 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 36 / 50 36. 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 37 / 50 37. The basic head loss in a long pipe is: a) fittings b) sudden increase in diameter c) sudden decrease in diameter d) friction 38 / 50 38. 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 39 / 50 39. 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] 40 / 50 40. 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 41 / 50 41. In an open channel flow a) the velocity distribution is symmetrical about the pipe axis b) the maximum velocity occurs at a little distance below the water surface c) flow cross-section is fixed d) the flow takes place at the expense of hydraulic pressure 42 / 50 42. 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 43 / 50 43. The attraction among different particles of the same material is a) adhesion b) cohesion c) corrosion d) fusion 44 / 50 44. *If the volume of liquid weighing 3000 kg is 4 cubic meters, then the specific gravity is a) 750 kg/m^3 b) 12000 kg/m^3 c) 1.33 d) 0.75 45 / 50 45. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 46 / 50 46. 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 47 / 50 47. The upward water pressure at the base of the structure is called a) up b) down c) uplist d) downlift 48 / 50 48. 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 49 / 50 49. In an open tube, the free surface of mercury remains a) horizontal b) curved upwards c) curved downwards d) none of the above 50 / 50 50. The phenomenon of rising of a liquid surface in a tube of small diameter relative to the adjacent normal level of the liquid is known as a) capillary rise b) capillary fall c) rising 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