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. 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% 2 / 50 2. Practical fluids possess a) viscosity b) surface tension c) compressibility d) all of the above 3 / 50 3. 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 4 / 50 4. 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 5 / 50 5. *The term v^2/2g is known as a) kinetic energy b) pressure energy c) kinetic energy per unit weight d) none of the above 6 / 50 6. *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 7 / 50 7. *Chazy's formula is given by a) v = C√mi b) v = m√ci c) v = C√mci d) v = i√mc 8 / 50 8. 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 9 / 50 9. *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 10 / 50 10. *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 11 / 50 11. *The actual velocity through an orifice is........... than the theoretical velocity. a) more b) less c) equal d) not defined 12 / 50 12. If the density of a fluid changes from point to point in a flow region, it is called a) steady flow b) unsteady flow c) non-uniform flow d) compressible flow 13 / 50 13. *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 14 / 50 14. *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 15 / 50 15. Super-critical flow occurs in a) normal slope b) mild slope c) steep slope d) all of the above 16 / 50 16. *Stoke is the unit of a) surface tension b) viscosity c) kinematic viscosity d) none of the above 17 / 50 17. The most economical section of a circular channel for the maximum discharge is when a) depth of water = 0.95 diameter of the circular section b) hydraulic mean depth = 0.286 diameter of the circular section c) wetted perimeter = 2.6 diameters of the circular section d) all of the above 18 / 50 18. *Variation in volume of liquid with variation in pressure is called a) plasticity b) viscosity c) compressibility d) none of the above 19 / 50 19. *Surface tension is the force a) per unit length b) per unit area c) per unit volume d) all of the above 20 / 50 20. *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 21 / 50 21. "Manning's formula is used for a) flow in open channels b) head loss due to friction in open channels c) head loss due to friction in pipes flowing full d) flow in pipes 22 / 50 22. Crest of a weir is lower than d/s water level a) submerged weir b) Cipolletti weir c) triangular weir d) sharp-crested weir 23 / 50 23. Water belongs to a) compressible fluids b) none of the above c) Newtonian fluids d) non-Newtonian fluids 24 / 50 24. 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 25 / 50 25. 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 26 / 50 26. *The main assumption of Bernoulli's equation is a) the velocity of energy of liquid particles across any cross-section of a pipe is uniform b) no external force except gravity acts on the liquid c) there is no loss of energy of the liquid while flowing d) all of the above 27 / 50 27. The most efficient channel section is a) semi-circular b) rectangular c) triangular d) trapezoidal 28 / 50 28. The viscosity of gases varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 29 / 50 29. *An independent mass of a fluid does not possess a) elevation energy b) kinetic energy c) pressure energy d) none of the above 30 / 50 30. 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 31 / 50 31. *Orifice-meter is used to measure: a) pressure at the point b) discharge c) average speed d) velocity 32 / 50 32. 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 33 / 50 33. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 34 / 50 34. 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 35 / 50 35. Hydraulic gradient line and total energy line are a) same b) different c) differ by pressure head d) differ by static head 36 / 50 36. 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 37 / 50 37. 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 38 / 50 38. 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 39 / 50 39. 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 40 / 50 40. 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. 41 / 50 41. *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 42 / 50 42. *Pressure head is given by a) P/w b) z c) v/2g d) all 43 / 50 43. Hydrostatic pressure on a dam depends upon its a) length b) depth c) shape d) both (b) and (c) of the above 44 / 50 44. *The float method is used to measure a) the discharge in an open channel b) the velocity in an open channel c) discharge open in an open channel d) all of the above 45 / 50 45. 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 46 / 50 46. 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 47 / 50 47. 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 48 / 50 48. *The difference between the total energy line and the hydraulic gradient line is a) kinetic head b) pressure head c) datum head d) loss of head 49 / 50 49. The pressure difference between inside and outside of a droplet of water is given by (Where σ is surface tension and d is the diameter of the droplet.) a) 2σ/d b) 4σ/d c) 6σ/d d) 8σ/d 50 / 50 50. 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 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