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. *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 2 / 50 2. The hydrostatic force exerted by 2 m deep water on the gate downstream is equal to a) 40 kN b) 10 kN c) 20 kN d) 30 kN 3 / 50 3. 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 4 / 50 4. *Cavitations is caused by a) low pressure b) high pressure c) low velocity d) high velocity 5 / 50 5. *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 6 / 50 6. Liquids or fluids a) have no shape b) cannot be compressed c) both (a) and (b) of above d) none of the above 7 / 50 7. If the volume of a liquid weighing 3000 kg is 4 cubic meters, then 0.75 is its a) specific weight b) specific mass c) specific gravity d) none of the above 8 / 50 8. *The term v^2/2g is known as a) kinetic energy b) pressure energy c) kinetic energy per unit weight d) none of the above 9 / 50 9. 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] 10 / 50 10. *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 11 / 50 11. 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 12 / 50 12. *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 13 / 50 13. *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 14 / 50 14. 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) 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. *Manometers 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 17 / 50 17. The attraction among different particles of the same material is a) adhesion b) cohesion c) corrosion d) fusion 18 / 50 18. *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 19 / 50 19. 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 20 / 50 20. Liquids a) cannot be compressed b) do not occupy definite shape c) are not affected by change in pressure and temperature d) none of the above 21 / 50 21. 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 22 / 50 22. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 23 / 50 23. An intensifier is used to increase a) pressure b) temperature c) energy d) none of the above 24 / 50 24. *Pressure head is given by a) P/w b) z c) v/2g d) all 25 / 50 25. The numerical value of vorticity is.....of the rotation a) twice b) thrice c) same d) all of the above 26 / 50 26. *Back water curve is caused if there is a a) friction head loss is more than the bed slope b) obstruction due to weir in the channel c) there is an increase in width of the channel d) none of the above 27 / 50 27. When the fluid is at rest, the shear stress is a) maximum b) zero c) unpredictable d) none of the above 28 / 50 28. 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 29 / 50 29. *To measure very low pressure, we use: a) barometers b) piezometers c) monometers d) differential manometers 30 / 50 30. 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 31 / 50 31. *The notch angle for the maximum discharge over a triangular notch is a) 30° b) 60° c) 90° d) 120° 32 / 50 32. *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> 33 / 50 33. *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 34 / 50 34. *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 35 / 50 35. *The main assumption of Bernoulli's equation is a) the velocity of energy of liquid particles across any cross-section of a pipe is uniform b) no external force except gravity acts on the liquid c) there is no loss of energy of the liquid while flowing d) all of the above 36 / 50 36. *Surface tension is the force a) per unit length b) per unit area c) per unit volume d) all of the above 37 / 50 37. The viscosity of liquids varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 38 / 50 38. *An independent mass of a fluid does not possess a) elevation energy b) kinetic energy c) pressure energy d) none of the above 39 / 50 39. A siphon is used a) to connect water reservoirs at different levels intervened by a hill b) to supply water to a town from a higher level to a lower level c) to fill up a tank with water at a higher level from a lower level d) none of the above 40 / 50 40. *Losses are more in a) laminar flow b) critical flow c) turbulent flow d) transition flow 41 / 50 41. *If the velocity, pressure, density, etc., do not change at a point with respect to time, the flow is called a) uniform b) incompressible c) non-uniform d) steady 42 / 50 42. *The discharge through a trapezoidal channel is maximum when a) m = d b) m = 2d c) m = 3d d) m = d/2 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. 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 45 / 50 45. The viscosity of gases varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 46 / 50 46. If the Froude number in open channel flow is equal to 1.0, the flow is called a) critical flow b) streaming flow c) shooting flow d) none of the above 47 / 50 47. Hydrostatic pressure on a dam depends upon its a) length b) depth c) shape d) both (b) and (c) of the above 48 / 50 48. Discharge over an ogee weir remains the same as that of a) sharp-crested weir b) triangular weir c) Cipolleti weir d) drowned weir 49 / 50 49. "Maximum efficiency of power transmission through a pipe is a) 50% b) 60% c) 66% d) 76% 50 / 50 50. 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 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