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. In an open tube, the free surface of mercury remains a) horizontal b) curved upwards c) curved downwards d) none of the above 2 / 50 2. *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 3 / 50 3. *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 4 / 50 4. A siphon is used a) to connect water reservoirs at different levels intervened by a hill b) to supply water to a town from a higher level to a lower level c) to fill up a tank with water at a higher level from a lower level d) none of the above 5 / 50 5. 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 6 / 50 6. 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 7 / 50 7. 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 8 / 50 8. An intensifier is used to increase a) pressure b) temperature c) energy d) none of the above 9 / 50 9. 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 10 / 50 10. *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> 11 / 50 11. *The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid if a) the area is horizontal b) the area is vertical c) the area is inclined d) all of the above 12 / 50 12. *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 13 / 50 13. *The rate of flow through a venturimeter varies as a) H^1/2 b) H^3/2 c) H^4/2 d) H^5/2 14 / 50 14. 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 15 / 50 15. A triangular notch is preferred to a rectangular notch because a) only one reading is required b) its formula is simple to remember c) it gives more accurate results for low discharge (Q≤100m^3/sec) d) it measures a wide range of flows accurately 16 / 50 16. 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 17 / 50 17. Reynolds number is the ratio of initial force and a) viscosity b) elasticity c) gravitational force d) surface tension 18 / 50 18. 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 19 / 50 19. A fluid particle may possess the displacement of a) translation b) rotation c) distortion d) all of the above 20 / 50 20. 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 21 / 50 21. In an open channels the analysis of a sugar is done by using a) continuity equation b) momentum equation c) energy equation d) none of the above 22 / 50 22. *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 23 / 50 23. A steady uniform flow is through a a) long pipe at decreasing rate b) long pipe at constant rate c) long pipe at increasing rate d) none of the above 24 / 50 24. *The orifice used for low discharge is a) rectangular b) circular c) square d) triangular 25 / 50 25. *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 26 / 50 26. 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 27 / 50 27. *The actual velocity through an orifice is........... than the theoretical velocity. a) more b) less c) equal d) not defined 28 / 50 28. One horsepower is equal to a) 1 kW b) 0.746 kW c) 0.836 kW d) 0.756 kW 29 / 50 29. For any channel section, the specific energy increase with a) decreases in depth of super critical flow b) increases in depth of super critical flow c) increases in depth of sub critical flow d) none of the above 30 / 50 30. *If the volume of liquid weighing 3000 kg is 4 cubic meters, then the specific gravity is a) 750 kg/m^3 b) 12000 kg/m^3 c) 1.33 d) 0.75 31 / 50 31. The maximum velocity in an open channel occurs a) at the bottom of the channel b) at 1/2 the depth of the channel c) slightly below the free surface d) at the free surface 32 / 50 32. The ratio of the inertia and gravitational force acting in any flow, ignoring other forces, is called a) Euler number b) Froude number c) Reynolds number d) Weber number 33 / 50 33. *The types of instrument used to measure low pressure with accuracy is a) piezometer b) barometer c) micro manometer d) mechanical gauge 34 / 50 34. 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 35 / 50 35. *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 36 / 50 36. *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 37 / 50 37. *Pressure within a soap bubble is a) equal to vapor pressure b) less than external pressure c) more than external pressure d) equal to external pressure 38 / 50 38. *Chazy's formula is given by a) v = C√mi b) v = m√ci c) v = C√mci d) v = i√mc 39 / 50 39. The most efficient channel section is a) semi-circular b) rectangular c) triangular d) trapezoidal 40 / 50 40. *If the velocity of fluid particles varies from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be a) laminar b) turbulent flow c) uniform flow d) non-uniform flow 41 / 50 41. *Molecules of fluids get attracted due to a) capillary action b) surface tension c) adhesion d) cohesion 42 / 50 42. *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 43 / 50 43. A ideal fluid a) is frictionless and incompressible b) obey Newton's law of viscosity c) is similar to gas d) is very viscous 44 / 50 44. *Which of the following statements is valid? a) a fluid with low viscosity resists motion because its molecular structure gives it a lot of internal friction b) viscosity describes the internal friction of a moving fluid c) two fluids with the same dynamic viscosities have the same kinematic viscosities irrespective of their densities d) intensity of liquid pressure at the bottom of a tank is w.g.h/3 45 / 50 45. *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 46 / 50 46. *Variation in volume of liquid with variation in pressure is called a) plasticity b) viscosity c) compressibility d) none of the above 47 / 50 47. *Hydraulic gradient line (except siphon) a) remains above the centerline of the conduit b) remains below the centerline of the conduit c) remains parallel to the centerline of the conduit d) may be above or below the centerline of the conduit 48 / 50 48. 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 49 / 50 49. The term z is known as a) potential energy b) pressure energy c) potential energy per unit weight d) none of the above 50 / 50 50. *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 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