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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. *The continuity equation deals with the law of conservation of a) mass b) momentum c) energy d) force 2 / 50 2. ........ 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 3 / 50 3. *Bernoulli's theorem deals with the law of conservation of a) energy b) all of the above c) mass d) momentum 4 / 50 4. *The upper surface of the notch over which water flows is known as a) vein b) nappe c) sill d) none of the above 5 / 50 5. *To measure very low pressure, we use: a) barometers b) piezometers c) monometers d) differential manometers 6 / 50 6. In fluids, steady flow occurs when a) the condition of flow change steadily with time b) the condition of flow do not change with time c) the condition of flow remains the same at adjacent points d) the velocity vector remains constant at a point 7 / 50 7. *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 8 / 50 8. In a flowing liquid, a particle may possess a) potential energy b) kinetic energy c) pressure energy d) all of the above 9 / 50 9. *The orifice used for low discharge is a) rectangular b) circular c) square d) triangular 10 / 50 10. 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 11 / 50 11. *Capillarity of water is a) directly proportional to surface tension b) inversely proportional to the angle of contact c) inversely proportional to the diameter of the pipe d) all of the above 12 / 50 12. The water immediately downstream of the conduit or weir is called a) head water b) tail water c) main water d) surplus water 13 / 50 13. *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 14 / 50 14. Hydraulic gradient line and total energy line are a) same b) different c) differ by pressure head d) differ by static head 15 / 50 15. 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 16 / 50 16. *Uniform flow is said to occur when a) the size and shape of the cross-section in a particular length remain constant b) the size and shape of the cross-section change along a length c) the frictional loss in the particular length of the channel will be more than the drop in elevation d) the frictional loss in the particular length of the channel will be less than the drop in elevation 17 / 50 17. *Manometers 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 18 / 50 18. *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 19 / 50 19. 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 20 / 50 20. The upward water pressure at the base of the structure is called a) up b) down c) uplist d) downlift 21 / 50 21. Gauge pressure is a) absolute - atmosphere b) absolute + atmosphere c) atmospheric ± absolute d) none of the above 22 / 50 22. 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 23 / 50 23. *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 24 / 50 24. 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 25 / 50 25. Rotation is defined as the movement of a fluid element in such a way that both of its axes rotate in... a) the same direction b) different directions c) both of the above d) none of the above 26 / 50 26. 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 27 / 50 27. *Capillary rise is proportional to a) surface tension b) unit weight of water c) diameter of the pipe d) none of the above 28 / 50 28. To avoid an interruption in the flow of a siphon, the air vessel is provided a) at the inlet b) at the outlet c) at the summit d) at the point between the inlet and outlet 29 / 50 29. At the vena contracta, the jet has the minimum cross-sectional area, and so the velocity of the liquid at this section will be a) minimum b) maximum c) average d) critical 30 / 50 30. *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 31 / 50 31. A substance which deforms continuously under the action of shear stress is called a) fluid b) liquid c) solid d) gas 32 / 50 32. The numerical value of vorticity is.....of the rotation a) twice b) thrice c) same d) all of the above 33 / 50 33. Poise is the unit of a) mass density b) kinematic viscosity c) viscosity d) pressure gradient 34 / 50 34. The capillary rise or fall of the liquid is given by a) h = σ cos θ / 4ρgd b) h = 4σ cos θ / ρgd c) h = 8σ cos θ / ρgd d) none of the above 35 / 50 35. 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 36 / 50 36. When the pipes are connected in parallel, the total loss of head a) is equal to the sum of the loss of head in each pipe b) is the same as in each pipe c) is equal to the reciprocal of the sum of the loss of head in each pipe d) none of the above 37 / 50 37. 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 38 / 50 38. *The discharge through a trapezoidal channel is maximum when a) half of the width = sloping side b) top width = 1/2 sloping side c) top width = 1.5 sloping side d) none of the above 39 / 50 39. 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 40 / 50 40. 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 41 / 50 41. 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 42 / 50 42. Flow in pipes is turbulent if the Reynolds number is a) less than 2100 b) more than 3000 c) between 2100 and 3000 d) none of the above 43 / 50 43. 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 44 / 50 44. *The floating method is used for the measurement of a) discharge b) head c) pressure d) none of the above 45 / 50 45. Hydraulic gradient line for an open flow channel is a) below water level b) same as water level c) above water level d) all of the above 46 / 50 46. 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 47 / 50 47. *Molecules of fluids get attracted due to a) capillary action b) surface tension c) adhesion d) cohesion 48 / 50 48. *The discharge through a rectangular channel is maximum when a) m = d/2 b) d=b/2 c) m=2d d) both (a) and (b) above 49 / 50 49. Liquids a) cannot be compressed b) do not occupy definite shape c) are not affected by change in pressure and temperature d) none of the above 50 / 50 50. 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 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. 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