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. Cavitations is collapsed by a) low pressure b) high pressure c) low velocity d) high velocity 2 / 50 2. 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 3 / 50 3. *The atmospheric pressure varies with a) altitude b) temperature c) weather conditions d) none of the above 4 / 50 4. *Bernoulli's equation is applied to a) venturimeter b) orifice meter c) pitot tube d) all of the above 5 / 50 5. "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 6 / 50 6. *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 7 / 50 7. The water immediately downstream of the conduit or weir is called a) head water b) tail water c) main water d) surplus water 8 / 50 8. *Venturimeter is used to measure a) rate of flow b) velocity c) depth of flow d) all of the above 9 / 50 9. *Water cushion is used to a) sit in the house b) destroy the energy c) produce energy d) none of the above 10 / 50 10. *The imaginary line joining each head of water is called a) hydraulic gradient line b) residual line c) loss of gradient line d) none of the above 11 / 50 11. *The specific weight of water 1000 kg/m^3 a) at normal pressure of 760 mm b) at 4°C temperature c) at mean sea level d) all of the above 12 / 50 12. In an open tube, the free surface of mercury remains a) horizontal b) curved upwards c) curved downwards d) none of the above 13 / 50 13. Water belongs to a) compressible fluids b) none of the above c) Newtonian fluids d) non-Newtonian fluids 14 / 50 14. 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 15 / 50 15. 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 16 / 50 16. *The continuity equation deals with the law of conservation of a) mass b) momentum c) energy d) force 17 / 50 17. From a nozzle exposed to the atmosphere, the liquid jet traverses a) a straight line b) a circular path c) a parabolic path d) an elliptical path 18 / 50 18. *Bernoulli's equation assumes that a) fluid is non-viscous b) fluid is homogeneous c) flow is along the streamline d) all of the above 19 / 50 19. 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 20 / 50 20. "Maximum efficiency of power transmission through a pipe is a) 50% b) 60% c) 66% d) 76% 21 / 50 21. 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] 22 / 50 22. 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 23 / 50 23. If the forces are due to inertia and gravity, and frictional resistance plays only a minor role, the design of channels is made by comparing a) Reynold number b) Froude number c) Weber number d) Mach number 24 / 50 24. 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 25 / 50 25. *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 26 / 50 26. Discharge over an ogee weir remains the same as that of a) sharp-crested weir b) triangular weir c) Cipolleti weir d) drowned weir 27 / 50 27. Head loss due to friction in a pipe is given by the Darcy-Weisbach equation a) h_f = 4fLV^2/2gd b) h_f = fLV^2/2gd c) h_f = 0.5V^2 / 2g d) h_f = (v_1-v_2)^2 / 2g 28 / 50 28. The upward water pressure at the base of the structure is called a) up b) down c) uplist d) downlift 29 / 50 29. 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 30 / 50 30. *The orifice used for low discharge is a) rectangular b) circular c) square d) triangular 31 / 50 31. Gauge pressure is a) absolute - atmosphere b) absolute + atmosphere c) atmospheric ± absolute d) none of the above 32 / 50 32. *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 33 / 50 33. *The actual velocity through an orifice is........... than the theoretical velocity. a) more b) less c) equal d) not defined 34 / 50 34. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 35 / 50 35. 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 36 / 50 36. If the total head of the nozzle of a pipe is 37.5m and the discharge is 1 cubic meter per second, then the power generated is a) 500 HP b) 550 HP c) 400 HP d) 450 HP 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. 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 39 / 50 39. If the volume of a liquid weighing 3000 kg is 4 cubic meters, then 0.75 is its a) specific weight b) specific mass c) specific gravity d) none of the above 40 / 50 40. 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 41 / 50 41. Which of the following quantities are dimensionless? a) surface tension b) specific weight c) angular velocity d) Mach number 42 / 50 42. *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 43 / 50 43. *A flow is said to be laminar when a) the fluid particles move in a zig-zag way b) the Reynolds number is high c) the fluid particles move in layers parallel to the boundary d) none of the above 44 / 50 44. The minimum head loss will occur in a) orifice meter b) venturimeter c) nozzle meter d) none of the above 45 / 50 45. For uniform flow in the channel a) the total energy line, hydraulic gradient line, and the bottom of the channel are parallel b) the total energy line and water surface are horizontal, while the bottom of the channel is inclined c) total energy line, water surface, and the bottom of the channel are parallel d) none of the above 46 / 50 46. *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 47 / 50 47. *If the velocity, pressure, density, etc., change at a point with respect to time, the flow is called a) uniform b) compressible c) unsteady d) incompressible 48 / 50 48. The error 1% in measuring H will produce a a) 1% b) 1.5% c) 2% d) 2.5% 49 / 50 49. 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 50 / 50 50. *Orifice-meter is used to measure: a) pressure at the point b) discharge c) average speed d) velocity 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. Thank you for your valuable feedback. Send feedback Buy Hydraulics MCQ PDF for Offline Study