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: 30 Time Allotted: 30 minutes Passing Score: 50% Randomization: Yes Certificate: No Do not refresh the page! 👍 All the best! 1 / 30 1. 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 2 / 30 2. Liquids or fluids a) have no shape b) cannot be compressed c) both (a) and (b) of above d) none of the above 3 / 30 3. *The actual velocity through an orifice is........... than the theoretical velocity. a) more b) less c) equal d) not defined 4 / 30 4. 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 5 / 30 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 / 30 6. 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 7 / 30 7. For the flow of liquid from an open-ended tube (nozzle) leading to the formation of a spray of liquid drops, the number generally is a) Euler number b) Froude number c) Weber number d) Reynolds number 8 / 30 8. The minimum head loss will occur in a) orifice meter b) venturimeter c) nozzle meter d) none of the above 9 / 30 9. *Head loss increases with a) an increase in velocity b) a decrease in velocity c) a decrease in length of the pipe d) an increase in the diameter of the pipe 10 / 30 10. 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 11 / 30 11. *Hydraulic gradient is equal to a) difference in water surface / total length of the channel b) total loss due to friction / total length of the channel c) wetted perimeter / total length of the channel d) area of cross-section / total length of the channel 12 / 30 12. 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 13 / 30 13. 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 14 / 30 14. *The upper surface of the weir over which water flows is known as a) crest b) notch c) top level d) none of the above 15 / 30 15. *What affects the quantity of mass of a fluid? a) acceleration due to gravity b) distance from the center of the earth c) elevation of the body d) none of the above 16 / 30 16. Reynolds number is the ratio of initial force and a) viscosity b) elasticity c) gravitational force d) surface tension 17 / 30 17. *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 18 / 30 18. The error 1% in measuring H will produce a a) 1% b) 1.5% c) 2% d) 2.5% 19 / 30 19. *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 20 / 30 20. *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 21 / 30 21. 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 22 / 30 22. In an inclined position, a venturimeter records a) less reading b) same reading c) more reading d) none of the above 23 / 30 23. 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 24 / 30 24. Cavitations is collapsed by a) low pressure b) high pressure c) low velocity d) high velocity 25 / 30 25. The pressure less than atmospheric pressure is known as a) suction pressure b) vacuum pressure c) negative pressure d) all of the above 26 / 30 26. 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 27 / 30 27. *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 28 / 30 28. Mach number is the ratio of inertia force to a) viscosity b) Froude number c) gravitational force d) elasticity 29 / 30 29. *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 30 / 30 30. *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 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
