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 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 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 2 / 50 2. *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 3 / 50 3. The numerical value of vorticity is.....of the rotation a) twice b) thrice c) same d) all of the above 4 / 50 4. *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 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. 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. 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 8 / 50 8. "Maximum efficiency of power transmission through a pipe is a) 50% b) 60% c) 66% d) 76% 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. 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 11 / 50 11. Total pressure on the top of a closed cylindrical vessel completely filled with liquid is directly proportional to a) radius b) (radius)^2 c) (radius)^3 d) (radius)^4 12 / 50 12. 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 13 / 50 13. The head of water representing in the case of HGL line is known as a) static head b) residual head c) pressure head d) all of the above 14 / 50 14. *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 15 / 50 15. 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 16 / 50 16. *The hydraulic ram is a pump that works on a) the principle of water hammer b) the principle of centrifugal action c) the principle of reciprocation action d) all of the above 17 / 50 17. A ideal fluid a) is frictionless and incompressible b) obey Newton's law of viscosity c) is similar to gas d) is very viscous 18 / 50 18. *Surface float is used to measure a) pressure b) difference in pressure c) viscosity of flow d) none of the above 19 / 50 19. 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 20 / 50 20. 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 21 / 50 21. 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 22 / 50 22. The viscosity of liquids varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 23 / 50 23. 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 24 / 50 24. 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 25 / 50 25. If the forces are due to inertia and gravity, and frictional resistance plays only a minor role, the design of channels is made by comparing a) Reynold number b) Froude number c) Weber number d) Mach number 26 / 50 26. A rise or fall of liquid in a glass tube of a very small diameter when dipped is a) directly proportional to the force per unit length of periphery b) directly proportional to the sine of the angle of contact c) directly proportional to the specific weight of the liquid d) inversely proportional to the diameter of the glass tube 27 / 50 27. A substance which deforms continuously under the action of shear stress is called a) fluid b) liquid c) solid d) gas 28 / 50 28. 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 29 / 50 29. In an open channel flow a) the hydraulic gradient line is lower than the liquid surface b) the hydraulic gradient line coincides with the liquid surface c) the hydraulic gradient line is higher than the liquid surface d) none of the above 30 / 50 30. As per our convenience which one is correct with respect to the dimensionless number? a) WIS-MIE-RIV-FIG-EIP b) WIE-MIS-RIV-FIG-IEP c) MIE-WIS-RIG-FIV-PIE d) WIG-MIS-RIE-FIV-IPE 31 / 50 31. *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 32 / 50 32. 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 33 / 50 33. *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 34 / 50 34. 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 35 / 50 35. Reynolds number is the ratio of initial force and a) viscosity b) elasticity c) gravitational force d) surface tension 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. Hydraulic gradient line for an open flow channel is a) below water level b) same as water level c) above water level d) all of the above 38 / 50 38. 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 39 / 50 39. Hydraulic gradient line and total energy line are a) same b) different c) differ by pressure head d) differ by static head 40 / 50 40. 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] 41 / 50 41. ........ 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 42 / 50 42. *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> 43 / 50 43. 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 44 / 50 44. *The continuity equation deals with the law of conservation of a) mass b) momentum c) energy d) force 45 / 50 45. *The phenomenon occurring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream, causing a distinct rise of the liquid surface, is a) water hammer b) hydraulic jump c) critical discharge d) all of the above 46 / 50 46. Hydrostatic pressure on a dam depends upon its a) length b) depth c) shape d) both (b) and (c) of the above 47 / 50 47. *To measure very low pressure, we use: a) barometers b) piezometers c) monometers d) differential manometers 48 / 50 48. *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 49 / 50 49. The most economical section of a circular channel for the maximum discharge is when a) depth of water = 0.95 diameter of the circular section b) hydraulic mean depth = 0.286 diameter of the circular section c) wetted perimeter = 2.6 diameters of the circular section d) all of the above 50 / 50 50. 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 Please provide accurate information so we can send your Achievement Certificate by mail. 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