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. *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 2 / 50 2. A fluid particle may possess the displacement of a) translation b) rotation c) distortion d) all of the above 3 / 50 3. 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 4 / 50 4. 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 5 / 50 5. *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 6 / 50 6. *The pressure in pipe flow is normally a) less than atmospheric pressure b) equal to atmospheric pressure c) more than atmospheric pressure d) none of the above 7 / 50 7. *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 8 / 50 8. *Water cushion is used to a) sit in the house b) destroy the energy c) produce energy d) none of the above 9 / 50 9. In a flowing liquid, a particle may possess a) potential energy b) kinetic energy c) pressure energy d) all of the above 10 / 50 10. 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 11 / 50 11. *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 12 / 50 12. 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 13 / 50 13. 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 14 / 50 14. The thickness of a sharp-crested weir is kept less than a) one-third of the height of water on the sill b) one-half of the height of water on the sill c) two-thirds of the height of water on the sill d) four-thirds of the height of water on the sill 15 / 50 15. *An independent mass of a fluid does not possess a) elevation energy b) kinetic energy c) pressure energy d) none of the above 16 / 50 16. Crest of a weir is lower than d/s water level a) submerged weir b) Cipolletti weir c) triangular weir d) sharp-crested weir 17 / 50 17. *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 18 / 50 18. *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 19 / 50 19. *To measure atmospheric pressure, we use a) barometers b) piezometer c) manometers d) differential manometers 20 / 50 20. *The discharge through a trapezoidal channel is maximum when a) m = d b) m = 2d c) m = 3d d) m = d/2 21 / 50 21. The inlet length of a venturimeter a) is equal to the outlet length b) is more than the outlet length c) is less than the outlet length d) none of the above 22 / 50 22. *Pressure head is given by a) P/w b) z c) v/2g d) all 23 / 50 23. *Cipolleti weir is a a) rectangular weir whose length is kept 3 times the height of the water above the sill b) triangular weir, whose notch angle is 90° c) trapezoidal weir, whose sides slope 1 horizontal to 4 verticals d) a combination of rectangular and triangular weirs 24 / 50 24. *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 25 / 50 25. If the specific gravity of oil is 0.7, then find the density of oil a) 1000 kg/cm^3 b) 900 kg/cm^3 c) 800 kg/cm^3 d) 700 kg/cm^3 26 / 50 26. *Bernoulli's equation is applied to a) venturimeter b) orifice meter c) pitot tube d) all of the above 27 / 50 27. The term z is known as a) potential energy b) pressure energy c) potential energy per unit weight d) none of the above 28 / 50 28. Head loss due to friction in a pipe is given by the Darcy-Weisbach equation a) h_f = 4fLV^2/2gd b) h_f = fLV^2/2gd c) h_f = 0.5V^2 / 2g d) h_f = (v_1-v_2)^2 / 2g 29 / 50 29. *The orifice used for low discharge is a) rectangular b) circular c) square d) triangular 30 / 50 30. *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 31 / 50 31. 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 32 / 50 32. 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 33 / 50 33. *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 34 / 50 34. 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 35 / 50 35. *To measure very low pressure, we use: a) barometers b) piezometers c) monometers d) differential manometers 36 / 50 36. *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 37 / 50 37. 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 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. 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 40 / 50 40. 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 41 / 50 41. *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 42 / 50 42. *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 43 / 50 43. 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 44 / 50 44. When the fluid is at rest, the shear stress is a) maximum b) zero c) unpredictable d) none of the above 45 / 50 45. *The specific weight of water 1000 kg/m^3 a) at normal pressure of 760 mm b) at 4°C temperature c) at mean sea level d) all of the above 46 / 50 46. With a clinging nappe of a weir, the excess discharge is a) 6% to 7% b) 8% to 10% c) 12% to 15% d) 25% to 30% 47 / 50 47. *Losses are more in a) laminar flow b) critical flow c) turbulent flow d) transition flow 48 / 50 48. 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 49 / 50 49. Weber number is the ratio of inertia force to a) surface tension b) gravitational force c) elasticity d) viscosity 50 / 50 50. *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 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