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. 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 2 / 50 2. 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 3 / 50 3. *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 4 / 50 4. *Back water curve is caused if there is a a) friction head loss is more than the bed slope b) obstruction due to weir in the channel c) there is an increase in width of the channel d) none of the above 5 / 50 5. Liquids or fluids a) have no shape b) cannot be compressed c) both (a) and (b) of above d) none of the above 6 / 50 6. *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 7 / 50 7. The minimum head loss will occur in a) orifice meter b) venturimeter c) nozzle meter d) none of the above 8 / 50 8. If the Froude number in open channel flow is more than 1.0, the flow is called a) critical flow b) streaming flow c) shooting flow d) none of the above 9 / 50 9. The depth of flow after the hydraulic jump is a) d2 = d1/2 [√1+8(Fe)1^2 -1] b) d1 = d2/2 [√1+8(Fe)1^2 -1] c) d2 = d1/3 [√1+8(Fe)1^2 -1] d) d2 = d1/2 [√1+2(Fe)1^2 -1] 10 / 50 10. The capillary rise or fall of the liquid is given by a) h = σ cos θ / 4ρgd b) h = 4σ cos θ / ρgd c) h = 8σ cos θ / ρgd d) none of the above 11 / 50 11. 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 12 / 50 12. *The atmospheric pressure varies with a) altitude b) temperature c) weather conditions d) none of the above 13 / 50 13. Mass density of liquid (p) is given by a) p = mass/volume b) p = metric slug/m^2 c) p = kgsec^3/m^4 d) all of the above 14 / 50 14. The viscosity of gases varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 15 / 50 15. 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 16 / 50 16. 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 17 / 50 17. 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 18 / 50 18. *The upper surface of the weir over which water flows is known as: a) vein b) nappe c) sill d) none of the above 19 / 50 19. Gauge pressure is a) absolute - atmosphere b) absolute + atmosphere c) atmospheric ± absolute d) none of the above 20 / 50 20. The error 1% in measuring H will produce a a) 1% b) 1.5% c) 2% d) 2.5% 21 / 50 21. The ratio of the mean velocity to the surface velocity in open channels is equal to a) 0.55 b) 0.75 c) 0.88 d) 1.75 22 / 50 22. 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 23 / 50 23. 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 24 / 50 24. An oil of specific gravity 0.7 and pressure 0.14 kgf/cm^2 will have the height of oil as a) 70 cm of oil b) 2 m of oil c) 20 cm of oil d) 80 cm of oil 25 / 50 25. Super-critical flow occurs in a) normal slope b) mild slope c) steep slope d) all of the above 26 / 50 26. *Molecules of fluids get attracted due to a) capillary action b) surface tension c) adhesion d) cohesion 27 / 50 27. *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 28 / 50 28. *Pascal's law states that pressure at a point is equal in all directions a) in a liquid at rest b) in a fluid at rest c) in a laminar flow d) in a turbulent flow 29 / 50 29. *Bernoulli's equation is applied to a) venturimeter b) orifice meter c) pitot tube d) all of the above 30 / 50 30. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 31 / 50 31. 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 32 / 50 32. Find the capillary rise/fall in a glass tube when immersed in mercury with the following given data: surface tension, σ = 0.52 gmf/cm, angle of contact, θ = 130°, S.G. of mercury = 13.6, diameter of the pipe = 2.5 mm. a) 0.393 cm rise b) 0.393 cm fall c) neither fall nor rise d) all of the above 33 / 50 33. 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 34 / 50 34. 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 35 / 50 35. 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 36 / 50 36. 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 37 / 50 37. A siphon is an a) L-shaped pipe b) U-shaped pipe c) inverted U-shaped pipe d) all of the above 38 / 50 38. If the velocity in a fluid flow changes with respect to the length of the direction of the flow, it is called a) unsteady flow b) compressible flow c) rotational flow d) none of the above 39 / 50 39. Specific weight of liquid a) remains constant at every place b) does not remain constant at every place c) varies from place to place d) does not vary on any other planet except earth 40 / 50 40. *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 41 / 50 41. 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 42 / 50 42. *The upper surface of the notch over which water flows is known as a) vein b) nappe c) sill d) none of the above 43 / 50 43. 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 44 / 50 44. 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 45 / 50 45. *Barometers 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 46 / 50 46. *The continuity equation deals with the law of conservation of a) mass b) momentum c) energy d) force 47 / 50 47. 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 48 / 50 48. The water immediately downstream of the conduit or weir is called a) head water b) tail water c) main water d) surplus water 49 / 50 49. Pick up the correct statement from the following a) total energy gradient is the graphical representation of the total head at any section of a pipeline b) vertical distance between the total energy line and hydraulic grade line is equal to the velocity head c) vertical distance between the total energy line and total energy gradient represents the loss of head d) all of the above 50 / 50 50. *The magnitude of capillary rise is more in: a) silts b) sands c) clays d) gravels 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
