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. Hydrostatic pressure on a dam depends upon its a) length b) depth c) shape d) both (b) and (c) of the above 2 / 50 2. Water belongs to a) compressible fluids b) none of the above c) Newtonian fluids d) non-Newtonian fluids 3 / 50 3. *Water cushion is used to a) sit in the house b) destroy the energy c) produce energy d) none of the above 4 / 50 4. *Venturimeter is used to measure a) rate of flow b) velocity c) depth of flow d) all of the above 5 / 50 5. *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 6 / 50 6. 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 7 / 50 7. 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 8 / 50 8. *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 9 / 50 9. *If a pitot tube is placed with its nose facing sideways, the liquid a) rises in the tube b) falls in the tube c) neither rises nor falls in the tube d) all of the above 10 / 50 10. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a triangular notch is a) 2/3 b) 3/2 c) 2/5 d) 5/2 11 / 50 11. *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 12 / 50 12. *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 13 / 50 13. Reynolds number is the ratio of initial force and a) viscosity b) elasticity c) gravitational force d) surface tension 14 / 50 14. Critical depth (he) is given by (where q= rate of flow per unit width of channel) a) (q^2/g)^1/3 b) (q^2/g)^1/4 c) (q^2/g)^1/2 d) none of the above 15 / 50 15. *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 16 / 50 16. 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 17 / 50 17. *The flow in which the path of individual particles of liquid cross each other is called a) uniform flow b) turbulent flow c) stream line flow d) none of the above 18 / 50 18. 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 19 / 50 19. In an inclined position, a venturimeter records a) less reading b) same reading c) more reading d) none of the above 20 / 50 20. If the fluid particles move in a zig-zag way, the flow is called a) unsteady b) non-uniform c) turbulent d) incompressible 21 / 50 21. *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 22 / 50 22. *In flow, the liquid particles may possess a) potential energy b) kinetic energy c) pressure energy d) all of the above 23 / 50 23. In the case of a broad-crested weir, the depth of water h at the end of the still is given by a) h = H/2 b) h = 2H/3 c) h = 3H/4 d) h = H 24 / 50 24. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 25 / 50 25. One horsepower is equal to a) 1 kW b) 0.746 kW c) 0.836 kW d) 0.756 kW 26 / 50 26. 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 27 / 50 27. *The upper surface of the notch over which water flows is known as a) vein b) nappe c) sill d) none of the above 28 / 50 28. *The continuity equation deals with the law of conservation of a) mass b) momentum c) energy d) force 29 / 50 29. A fluid particle may possess the displacement of a) translation b) rotation c) distortion d) all of the above 30 / 50 30. 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 31 / 50 31. *Surface float is used to measure a) pressure b) difference in pressure c) viscosity of flow d) none of the above 32 / 50 32. *If the volume of a liquid weighing 2400 kg is 3 cubic meters, then 0.8 is its: a) specific weight b) specific mass c) specific gravity d) none of the above 33 / 50 33. 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 34 / 50 34. 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 35 / 50 35. If fluid or flow parameters at any given instant remain the same at every point in space, it is called: a) steady flow b) laminar flow c) uniform flow d) rotational flow 36 / 50 36. 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 37 / 50 37. *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 38 / 50 38. Practical fluids possess a) viscosity b) surface tension c) compressibility d) all of the above 39 / 50 39. The phenomenon of rising of a liquid surface in a tube of small diameter relative to the adjacent normal level of the liquid is known as a) capillary rise b) capillary fall c) rising d) none of the above 40 / 50 40. Mouthpieces are used to measure a) velocity b) pressure c) head d) rate of flow 41 / 50 41. *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 42 / 50 42. The term z is known as a) potential energy b) pressure energy c) potential energy per unit weight d) none of the above 43 / 50 43. Chazy's formula is used to determine a) head loss due to friction in pipes b) velocity of flow in pipe c) velocity of flow in channels d) none of the above 44 / 50 44. *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 45 / 50 45. 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 46 / 50 46. The most efficient channel section is a) semi-circular b) rectangular c) triangular d) trapezoidal 47 / 50 47. 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 48 / 50 48. *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 49 / 50 49. The viscosity of liquids varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 50 / 50 50. *Viscosity of a liquid a) drops with temperature b) rises with temperature c) does not vary with temperature d) remains constant up to a certain temperature 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. 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