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. *Bernoulli's theorem deals with the law of conservation of a) energy b) all of the above c) mass d) momentum 2 / 50 2. *If the velocity of fluid particles varies from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be a) laminar b) turbulent flow c) uniform flow d) non-uniform flow 3 / 50 3. The pressure less than atmospheric pressure is known as a) suction pressure b) vacuum pressure c) negative pressure d) all of the above 4 / 50 4. To avoid an interruption in the flow of a siphon, the air vessel is provided a) at the inlet b) at the outlet c) at the summit d) at the point between the inlet and outlet 5 / 50 5. *Uniform flow is said to occur when a) the size and shape of the cross-section in a particular length remain constant b) the size and shape of the cross-section change along a length c) the frictional loss in the particular length of the channel will be more than the drop in elevation d) the frictional loss in the particular length of the channel will be less than the drop in elevation 6 / 50 6. *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 7 / 50 7. *Cavitations is caused by a) low pressure b) high pressure c) low velocity d) high velocity 8 / 50 8. 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 9 / 50 9. The imaginary line drawn such that the tangents at its all points indicate the direction of the velocity of the fluid particle at each point is called a) path line b) stream line c) potential line d) streak line 10 / 50 10. Water belongs to a) compressible fluids b) none of the above c) Newtonian fluids d) non-Newtonian fluids 11 / 50 11. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 12 / 50 12. *Losses are more in a) laminar flow b) critical flow c) turbulent flow d) transition flow 13 / 50 13. 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 14 / 50 14. 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 15 / 50 15. 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 16 / 50 16. *The upper surface of the weir over which water flows is known as: a) vein b) nappe c) sill d) none of the above 17 / 50 17. Falling drops of water become spheres due to a) adhesion b) cohesion c) surface tension d) viscosity 18 / 50 18. *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 19 / 50 19. *The upper surface of the notch over which water flows is known as a) vein b) nappe c) sill 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. 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 22 / 50 22. *Variation in volume of liquid with variation in pressure is called a) plasticity b) viscosity c) compressibility d) none of the above 23 / 50 23. "Manning's formula is used for a) flow in open channels b) head loss due to friction in open channels c) head loss due to friction in pipes flowing full d) flow in pipes 24 / 50 24. One horsepower is equal to a) 1 kW b) 0.746 kW c) 0.836 kW d) 0.756 kW 25 / 50 25. Weber number is the ratio of inertia force to a) surface tension b) gravitational force c) elasticity d) viscosity 26 / 50 26. Which of the following is the example of laminar flow? a) underground flow b) flow past tiny bodies c) both of (a) and (b) d) none of the above 27 / 50 27. *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 28 / 50 28. *Surface tension is the force a) per unit length b) per unit area c) per unit volume d) all of the above 29 / 50 29. ........ is defined as the maximum increase in water level in the path of the flow of water a) afflux b) rising of the wall c) flood d) rainfall 30 / 50 30. 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 31 / 50 31. *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 32 / 50 32. *The energy possessed by a fluid by virtue of its existing pressure is called a) elevation energy b) kinetic energy c) potential energy d) all of the above 33 / 50 33. The flow in which each liquid particle has a definite path is called a) stream line flow b) uniform flow c) steady flow d) turbulent flow 34 / 50 34. 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 35 / 50 35. *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 36 / 50 36. *The width of a weir with end contraction is a) equal to the width of the channel b) less than the width of the channel c) half the width of the channel d) none of the above 37 / 50 37. *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 38 / 50 38. The viscosity of gases varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 39 / 50 39. At the vena contracta, the jet has the minimum cross-sectional area, and so the velocity of the liquid at this section will be a) minimum b) maximum c) average d) critical 40 / 50 40. *Venturimeter is used to measure a) rate of flow b) velocity c) depth of flow d) all of the above 41 / 50 41. If the Froude number in open channel flow is more than 1.0, the flow is called a) critical flow b) streaming flow c) shooting flow d) none of the above 42 / 50 42. 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 43 / 50 43. *Rotameter is used for measuring a) density of fluids b) value of fluids in a pipe c) discharge of fluids d) pressure in fluids 44 / 50 44. *An ideal flow of a liquid obeys a) continuity equation b) Newton's second law of viscosity c) Newton's second law of motion d) dynamic viscosity 45 / 50 45. *If a pitot tube is placed with its nose facing downstream, the liquid a) does not rise in the tube b) rises in the tube to a height √v^2/sg c) falls in the tube to a depth √v^2/2g d) none of the above 46 / 50 46. 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 47 / 50 47. *To measure very low pressure, we use: a) barometers b) piezometers c) monometers d) differential manometers 48 / 50 48. 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 49 / 50 49. *Viscosity of a liquid a) drops with temperature b) rises with temperature c) does not vary with temperature d) remains constant up to a certain temperature 50 / 50 50. 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 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