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. *Bernoulli's theorem deals with the law of conservation of a) energy b) all of the above c) mass d) momentum 2 / 50 2. 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 3 / 50 3. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 4 / 50 4. *If the velocity of fluid particles varies from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be a) laminar b) turbulent flow c) uniform flow d) non-uniform flow 5 / 50 5. 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 6 / 50 6. 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 7 / 50 7. 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 8 / 50 8. 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 9 / 50 9. *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 10 / 50 10. Gauge pressure is a) absolute - atmosphere b) absolute + atmosphere c) atmospheric ± absolute d) none of the above 11 / 50 11. The viscosity of gases varies with temperature a) directly proportional b) inversely proportional c) constant d) none of the above 12 / 50 12. Which of the following is the example of laminar flow? a) underground flow b) flow past tiny bodies c) both of (a) and (b) d) none of the above 13 / 50 13. If the Froude number in open channel flow is less than 1.0, the flow is called a) critical flow b) super-critical flow c) sub-critical flow d) none of the above 14 / 50 14. 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 15 / 50 15. *Molecules of fluids get attracted due to a) capillary action b) surface tension c) adhesion d) cohesion 16 / 50 16. *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 17 / 50 17. 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 18 / 50 18. *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 19 / 50 19. 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 20 / 50 20. 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 21 / 50 21. *The notch angle for the maximum discharge over a triangular notch is a) 30° b) 60° c) 90° d) 120° 22 / 50 22. 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 23 / 50 23. Which of the following quantities are dimensionless? a) surface tension b) specific weight c) angular velocity d) Mach number 24 / 50 24. *Cavitations is caused by a) low pressure b) high pressure c) low velocity d) high velocity 25 / 50 25. Water belongs to a) compressible fluids b) none of the above c) Newtonian fluids d) non-Newtonian fluids 26 / 50 26. The Manning's formula for flow in an open channel is given by a) v = n R^2/3 S^1/2 b) none of the above c) v = 1/n R^2/3 S^1/2 d) v = 1/n R^1/2 S^2/3 27 / 50 27. *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 28 / 50 28. 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 29 / 50 29. 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 30 / 50 30. In the case of vortex flow, the level of water at the center is a) higher than circumference b) lower than circumference c) same as circumference d) all of the above 31 / 50 31. 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 32 / 50 32. Open channel flow is a) one in which the liquid is flowing in a conduit and has a free surface b) one in which the liquid is flowing in a closed conduit running full c) a covered channel running full d) one in which the liquid is flowing in a conduit under pressure 33 / 50 33. "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 34 / 50 34. 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 35 / 50 35. A substance which deforms continuously under the action of shear stress is called a) fluid b) liquid c) solid d) gas 36 / 50 36. *Capillary rise is proportional to a) surface tension b) unit weight of water c) diameter of the pipe d) none of the above 37 / 50 37. *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 38 / 50 38. *Variation in volume of liquid with variation in pressure is called a) plasticity b) viscosity c) compressibility d) none of the above 39 / 50 39. When the pipes are connected in series, the total rate of flow a) is equal to the sum of the rate of flow in each pipe b) is equal to the reciprocal of the sum of the rate of flow in each pipe c) is the same as flowing through each pipe d) none of the above 40 / 50 40. *The types of instrument used to measure low pressure with accuracy is a) piezometer b) barometer c) micro manometer d) mechanical gauge 41 / 50 41. The difference in pressure head measured by a mercury-oil differential manometer for a 20 cm difference of mercury level will be (specific gravity of oil-0.8) a) 2.72m of oil b) 2.52m of oil c) 3.20m of oil d) 0.2m of oil 42 / 50 42. 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 43 / 50 43. 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 44 / 50 44. *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 45 / 50 45. *The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid if a) the area is horizontal b) the area is vertical c) the area is inclined d) all of the above 46 / 50 46. *Cipolleti weir is a a) rectangular weir whose length is kept 3 times the height of the water above the sill b) triangular weir, whose notch angle is 90° c) trapezoidal weir, whose sides slope 1 horizontal to 4 verticals d) a combination of rectangular and triangular weirs 47 / 50 47. *The discharge through a trapezoidal channel is maximum when a) m = d b) m = 2d c) m = 3d d) m = d/2 48 / 50 48. *The phenomenon occurring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream, causing a distinct rise of the liquid surface, is a) water hammer b) hydraulic jump c) critical discharge d) all of the above 49 / 50 49. If the specific gravity of oil is 0.7, then find the density of oil a) 1000 kg/cm^3 b) 900 kg/cm^3 c) 800 kg/cm^3 d) 700 kg/cm^3 50 / 50 50. 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 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