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. If the fluid particles move in a zig-zag way, the flow is called a) unsteady b) non-uniform c) turbulent d) incompressible 2 / 50 2. *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 3 / 50 3. 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 4 / 50 4. A rise or fall of liquid in a glass tube of a very small diameter when dipped is a) directly proportional to the force per unit length of periphery b) directly proportional to the sine of the angle of contact c) directly proportional to the specific weight of the liquid d) inversely proportional to the diameter of the glass tube 5 / 50 5. *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 6 / 50 6. *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 7 / 50 7. ........ is defined as the maximum increase in water level in the path of the flow of water a) afflux b) rising of the wall c) flood d) rainfall 8 / 50 8. 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 9 / 50 9. 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 10 / 50 10. 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 11 / 50 11. *Cavitations is caused by a) low pressure b) high pressure c) low velocity d) high velocity 12 / 50 12. Discharge over an ogee weir remains the same as that of a) sharp-crested weir b) triangular weir c) Cipolleti weir d) drowned weir 13 / 50 13. The thickness of a sharp-crested weir is kept less than a) one-third of the height of water on the sill b) one-half of the height of water on the sill c) two-thirds of the height of water on the sill d) four-thirds of the height of water on the sill 14 / 50 14. When the fluid is at rest, the shear stress is a) maximum b) zero c) unpredictable d) none of the above 15 / 50 15. 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 16 / 50 16. Cavitations is collapsed by a) low pressure b) high pressure c) low velocity d) high velocity 17 / 50 17. *The magnitude of water hammer depends upon a) the length of the pipeline b) elastic properties of liquid c) elastic properties of the pipe material d) diameter of the pipeline 18 / 50 18. *Stoke is the unit of a) surface tension b) viscosity c) kinematic viscosity d) none of the above 19 / 50 19. *The upper surface of the weir over which water flows is known as: a) vein b) nappe c) sill d) none of the above 20 / 50 20. *The upper surface of the notch over which water flows is known as a) vein b) nappe c) sill d) none of the above 21 / 50 21. 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 22 / 50 22. *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 23 / 50 23. Mach number is the ratio of inertia force to a) viscosity b) Froude number c) gravitational force d) elasticity 24 / 50 24. 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 25 / 50 25. 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 26 / 50 26. If the density of a fluid is constant from point to point in a flow region, it is called a) steady flow b) incompressible flow c) uniform flow d) rotational flow 27 / 50 27. The most efficient channel section is a) semi-circular b) rectangular c) triangular d) trapezoidal 28 / 50 28. Euler's number is the ratio of a) inertia force to pressure force b) pressure force to elastic force c) elastic force to viscous force d) viscous force to inertia force 29 / 50 29. *The magnitude of capillary rise is more in: a) silts b) sands c) clays d) gravels 30 / 50 30. Specific energy of a flowing fluid per unit weight is equal to a) (v^2/2g) + h b) (h^2/2g) + v c) (v^2/2h) + g d) (v^2/3g) + h 31 / 50 31. *The hydraulic radius is equal to a) area divided by the square of the wetted perimeter b) wetted area divided by the wetted perimeter c) the wetted perimeter divided by the area d) the square root of the area 32 / 50 32. *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 33 / 50 33. 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 34 / 50 34. *To measure very low pressure, we use: a) barometers b) piezometers c) monometers d) differential manometers 35 / 50 35. Reynolds number is the ratio of initial force and a) viscosity b) elasticity c) gravitational force d) surface tension 36 / 50 36. *The actual velocity through an orifice is........... than the theoretical velocity. a) more b) less c) equal d) not defined 37 / 50 37. 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 38 / 50 38. *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 39 / 50 39. In an open channel flow a) the velocity distribution is symmetrical about the pipe axis b) the maximum velocity occurs at a little distance below the water surface c) flow cross-section is fixed d) the flow takes place at the expense of hydraulic pressure 40 / 50 40. *Bernoulli's equation is applied to a) venturimeter b) orifice meter c) pitot tube d) all of the above 41 / 50 41. As per our convenience which one is correct with respect to the dimensionless number? a) WIS-MIE-RIV-FIG-EIP b) WIE-MIS-RIV-FIG-IEP c) MIE-WIS-RIG-FIV-PIE d) WIG-MIS-RIE-FIV-IPE 42 / 50 42. *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 43 / 50 43. 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 44 / 50 44. *The types of instrument used to measure low pressure with accuracy is a) piezometer b) barometer c) micro manometer d) mechanical gauge 45 / 50 45. *Surface tension is the force a) per unit length b) per unit area c) per unit volume d) all of the above 46 / 50 46. *Capillary rise is proportional to a) surface tension b) unit weight of water c) diameter of the pipe d) none of the above 47 / 50 47. The minimum head loss will occur in a) orifice meter b) venturimeter c) nozzle meter d) none of the above 48 / 50 48. 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 49 / 50 49. 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 50 / 50 50. 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 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. 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