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 basic head loss in a long pipe is: a) fittings b) sudden increase in diameter c) sudden decrease in diameter d) friction 2 / 50 2. 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 3 / 50 3. An intensifier is used to increase a) pressure b) temperature c) energy d) none of the above 4 / 50 4. 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 5 / 50 5. *Venturimeter is used to measure a) rate of flow b) velocity c) depth of flow d) all of the above 6 / 50 6. *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 7 / 50 7. If the Froude number in open channel flow is less than 1.0, the flow is called a) critical flow b) super-critical flow c) sub-critical flow d) none of the above 8 / 50 8. 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 9 / 50 9. *The types of instrument used to measure low pressure with accuracy is a) piezometer b) barometer c) micro manometer d) mechanical gauge 10 / 50 10. *The notch angle for the maximum discharge over a triangular notch is a) 30° b) 60° c) 90° d) 120° 11 / 50 11. Water hammer is a phenomenon that occurs a) when pressure increases sudden closure of the valve b) when pressure decreases sudden opening of the valve c) due to the elastic material of the pipe d) due to the incompressible nature of the fluid 12 / 50 12. *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 13 / 50 13. *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 14 / 50 14. *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 15 / 50 15. In an inclined position, a venturimeter records a) less reading b) same reading c) more reading d) none of the above 16 / 50 16. Hydrostatic pressure on a dam depends upon its a) length b) depth c) shape d) both (b) and (c) of the above 17 / 50 17. The minimum head loss will occur in a) orifice meter b) venturimeter c) nozzle meter d) none of the above 18 / 50 18. *The discharge through a trapezoidal channel is maximum when a) m = d b) m = 2d c) m = 3d d) m = d/2 19 / 50 19. 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 20 / 50 20. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a rectangular notch is a) 1/2 b) 2/3 c) 3/2 d) 3/4 21 / 50 21. Weber number is the ratio of inertia force to a) surface tension b) gravitational force c) elasticity d) viscosity 22 / 50 22. The pressure less than atmospheric pressure is known as a) suction pressure b) vacuum pressure c) negative pressure d) all of the above 23 / 50 23. The viscosity of liquids varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 24 / 50 24. 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 25 / 50 25. 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 26 / 50 26. *Losses are more in a) laminar flow b) critical flow c) turbulent flow d) transition flow 27 / 50 27. *The orifice used for low discharge is a) rectangular b) circular c) square d) triangular 28 / 50 28. *The upper surface of the weir over which water flows is known as a) crest b) notch c) top level d) none of the above 29 / 50 29. *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 30 / 50 30. *Pressure head is given by a) P/w b) z c) v/2g d) all 31 / 50 31. *The continuity equation deals with the law of conservation of a) mass b) momentum c) energy d) force 32 / 50 32. 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 33 / 50 33. 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 34 / 50 34. *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 35 / 50 35. If the fluid particles move in a zig-zag way, the flow is called a) unsteady b) non-uniform c) turbulent d) incompressible 36 / 50 36. Flow in pipes is turbulent if the Reynolds number is a) less than 2100 b) more than 3000 c) between 2100 and 3000 d) none of the above 37 / 50 37. *The rise of the water table, which takes place due to the transformation of the unstable shooting flow (super-critical) to the stable streaming is called a) hydraulic jump b) standing wave c) both (a) and (b) above d) water cushion 38 / 50 38. 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. 39 / 50 39. 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 40 / 50 40. *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 41 / 50 41. *A stepped notch is a combination of a) rectangular notches of different sizes b) triangular notches of different sizes c) rectangular and triangular notches d) all of the above 42 / 50 42. *If a pitot tube is placed with its nose facing sideways, the liquid a) rises in the tube b) falls in the tube c) neither rises nor falls in the tube d) all of the above 43 / 50 43. 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 44 / 50 44. 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 45 / 50 45. *Capillary rise is proportional to a) surface tension b) unit weight of water c) diameter of the pipe d) none of the above 46 / 50 46. Mouthpieces are used to measure a) velocity b) pressure c) head d) rate of flow 47 / 50 47. The multiplying factor for converting one poise into MKS unit of dynamic viscosity is a) 1 b) 0.1 c) 0.001 d) 0.0001 48 / 50 48. If the pressure is applied to the surface of a liquid, the liquid transmits the pressure equally in all directions is given by a) Pascal b) Newton c) Archimedes d) all of the above 49 / 50 49. 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 50 / 50 50. 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 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
