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. 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 2 / 50 2. 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 3 / 50 3. *Cipolletti weir is a trapezoidal weir having a side slope of a) H:V::1:2 b) H:V::2:1 c) H:V::1:4 d) none of the above 4 / 50 4. If fluid or flow parameters at any given instant remain the same at every point in space, it is called: a) steady flow b) laminar flow c) uniform flow d) rotational flow 5 / 50 5. 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 6 / 50 6. *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 7 / 50 7. 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 8 / 50 8. *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 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. The section of the Jet leaving an orifice, having the minimum cross-section area, is called a) orifice meter b) venturimeter c) mouthpiece d) vena contracta 11 / 50 11. 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 12 / 50 12. *An orifice is called a large orifice if the water head is a) two times the diameter of the pipe b) three times the diameter of the pipe c) four times the diameter of the pipe d) five times the diameter of the pipe 13 / 50 13. Hooke's law for solids is analogous to a) Newton's law of viscosity b) Pascal's law c) Boundary layer theory d) continuity equation 14 / 50 14. Hydraulic gradient line and total energy line are a) same b) different c) differ by pressure head d) differ by static head 15 / 50 15. *A flow is said to be laminar when a) the fluid particles move in a zig-zag way b) the Reynolds number is high c) the fluid particles move in layers parallel to the boundary d) none of the above 16 / 50 16. *Venturimeter is used to measure a) rate of flow b) velocity c) depth of flow d) all of the above 17 / 50 17. *The actual velocity through an orifice is........... than the theoretical velocity. a) more b) less c) equal d) not defined 18 / 50 18. In fluids, steady flow occurs when a) the condition of flow change steadily with time b) the condition of flow do not change with time c) the condition of flow remains the same at adjacent points d) the velocity vector remains constant at a point 19 / 50 19. *The discharge passing through the crest having a length of 1.25m, a height of the flow of water 0.25m, and Cd = 0.035 is a) 0.0116 cm³/sec b) 0.116 cm³/sec c) 0.0160 cm³/sec d) 0.00116 cm³/sec 20 / 50 20. Mach number is the ratio of inertia force to a) viscosity b) Froude number c) gravitational force d) elasticity 21 / 50 21. *If fluid or flow parameters at any given instant remain the same at every point in space, it is called: a) steady flow b) laminar flow c) uniform flow d) rotational flow 22 / 50 22. *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 23 / 50 23. The two depths at which the specific energy is the same are called a) alternate depths b) conjugate depths c) critical depths d) normal depths 24 / 50 24. 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 25 / 50 25. The viscosity of liquids varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 26 / 50 26. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a triangular notch is a) 2/3 b) 3/2 c) 2/5 d) 5/2 27 / 50 27. 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 28 / 50 28. *Cavitations is caused by a) low pressure b) high pressure c) low velocity d) high velocity 29 / 50 29. Velocity of flow may be determined using: a) division of discharge to the area of flow b) product of area and discharge divided by 100 c) product of wetted perimeter and hydraulic radius d) all of the above 30 / 50 30. The viscosity of gases varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 31 / 50 31. "Maximum efficiency of power transmission through a pipe is a) 50% b) 60% c) 66% d) 76% 32 / 50 32. *Water cushion is used to a) sit in the house b) destroy the energy c) produce energy d) none of the above 33 / 50 33. *Losses are more in a) laminar flow b) critical flow c) turbulent flow d) transition flow 34 / 50 34. *An independent mass of a fluid does not possess a) elevation energy b) kinetic energy c) pressure energy d) none of the above 35 / 50 35. *The floating method is used for the measurement of a) discharge b) head c) pressure d) none of the above 36 / 50 36. A vessel having a depth of 30 cm is filled with water up to a depth of 10 cm from the top level. Find the pressure exerted at a depth of 5 cm and 15 cm from the top of the vessel respectively a) 0, 50 kg/m^2 b) 0, 150 kg/m^2 c) 0, 100 kg/m^2 d) 50 kg/m^2, 50 kg/m^2 37 / 50 37. *The most economical section of a circular channel for the maximum velocity is when a) depth of water = 0.810 diameter b) hydraulic mean depth = 0.304 diameter of the circular section c) wetted perimeter = 2.245 diameters of the circular section d) all of the above 38 / 50 38. The basic head loss in a long pipe is: a) fittings b) sudden increase in diameter c) sudden decrease in diameter d) friction 39 / 50 39. *Head loss increases with a) an increase in velocity b) a decrease in velocity c) a decrease in length of the pipe d) an increase in the diameter of the pipe 40 / 50 40. The pressure less than atmospheric pressure is known as a) suction pressure b) vacuum pressure c) negative pressure d) all of the above 41 / 50 41. The discharge through a V-notch weir is directly proportional to: a) the bed slope of the channel upstream b) the depth of flow c) the top width of the notch d) the angle of the notch and the depth of the flow 42 / 50 42. Euler's number is the ratio of a) inertia force to pressure force b) pressure force to elastic force c) elastic force to viscous force d) viscous force to inertia force 43 / 50 43. Discharge over an ogee weir remains the same as that of a) sharp-crested weir b) triangular weir c) Cipolleti weir d) drowned weir 44 / 50 44. 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 45 / 50 45. *Surface float is used to measure a) pressure b) difference in pressure c) viscosity of flow d) none of the above 46 / 50 46. Specific weight of sea water is more than that of pure water because of a) dissolved air b) dissolved salts c) suspended matter d) all of the above 47 / 50 47. 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 48 / 50 48. If the density of a fluid is constant from point to point in a flow region, it is called a) steady flow b) incompressible flow c) uniform flow d) rotational flow 49 / 50 49. *The difference between the total energy gradient line and the total energy line is a) kinetic head b) pressure head c) datum head d) loss of head 50 / 50 50. If the total head of the nozzle of a pipe is 37.5m and the discharge is 1 cubic meter per second, then the power generated is a) 500 HP b) 550 HP c) 400 HP d) 450 HP 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. 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