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 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 2 / 50 2. 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 3 / 50 3. 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 4 / 50 4. 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 5 / 50 5. *The upper surface of the notch over which water flows is known as a) vein b) nappe c) sill d) none of the above 6 / 50 6. *Surface float is used to measure a) pressure b) difference in pressure c) viscosity of flow d) none of the above 7 / 50 7. *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 8 / 50 8. The pressure less than atmospheric pressure is known as a) suction pressure b) vacuum pressure c) negative pressure d) all of the above 9 / 50 9. *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 10 / 50 10. 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 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. The numerical value of vorticity is.....of the rotation a) twice b) thrice c) same d) all of the above 13 / 50 13. *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 14 / 50 14. 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 15 / 50 15. In an inclined pipe, the pressure difference at its two ends is due to a) sudden head drop at the inlet b) exit head drop c) frictional loss head d) all of the above 16 / 50 16. *To measure very low pressure, we use: a) barometers b) piezometers c) monometers d) differential manometers 17 / 50 17. If the fluid particles move in a zig-zag way, the flow is called a) unsteady b) non-uniform c) turbulent d) incompressible 18 / 50 18. 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 19 / 50 19. 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 20 / 50 20. *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 21 / 50 21. *The condition for the maximum velocity and discharge is given by (closed flow) a) 0.81D & 0.95D b) 0.82D & 0.94D c) 0.83D & 0.93D d) 0.84D & 0.92D 22 / 50 22. *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 23 / 50 23. *Variation in volume of liquid with variation in pressure is called a) plasticity b) viscosity c) compressibility d) none of the above 24 / 50 24. *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> 25 / 50 25. *Piezometers 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 26 / 50 26. *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 27 / 50 27. 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 28 / 50 28. Super-critical flow occurs in a) normal slope b) mild slope c) steep slope d) all of the above 29 / 50 29. *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 30 / 50 30. 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 31 / 50 31. *A pitot tube is used to measure a) pressure b) different in pressure c) velocity of flow d) none of the above 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. *Orifice-meter is used to measure: a) pressure at the point b) discharge c) average speed d) velocity 34 / 50 34. If H is the height of the liquid above the sill, the effect of end contraction on each side, according to Francis' formula, is a) 0.1H b) 0.2H c) 0.3H d) 0.4H 35 / 50 35. Mach number is the ratio of inertia force to a) viscosity b) Froude number c) gravitational force d) elasticity 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. Reynolds number is the ratio of initial force and a) viscosity b) elasticity c) gravitational force d) surface tension 38 / 50 38. 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 39 / 50 39. 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 40 / 50 40. The term P/pg is known as a) kinetic energy b) pressure energy per unit weight c) kinetic energy per unit weight d) none of the above 41 / 50 41. *Bernoulli's equation is applied to a) venturimeter b) orifice meter c) pitot tube d) all of the above 42 / 50 42. *Stoke is the unit of a) surface tension b) viscosity c) kinematic viscosity d) none of the above 43 / 50 43. 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 44 / 50 44. 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 45 / 50 45. *To measure atmospheric pressure, we use a) barometers b) piezometer c) manometers d) differential manometers 46 / 50 46. *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 47 / 50 47. 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 48 / 50 48. 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 49 / 50 49. The attraction among different particles of the same material is a) adhesion b) cohesion c) corrosion d) fusion 50 / 50 50. An intensifier is used to increase a) pressure b) temperature c) energy 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