Civil Engineering – Hydraulics Mock test – 2 Welcome to your Hydraulics Mock test - 2 Take an exciting test in Hydraulics You have only 20 mins to complete the test (25 Questions) Wish you all the best!!! Name Email 1. The radius of gyration of the water line of a floating ship is 4 m and its metacentric height is 72.5 cm. The period of oscillation of the ship, is A. π B. 2π C. 3π D. 4π E. π/22. Differential 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.3. When a body is totally or partially immersed in a fluid, it is buoyed up by a force equal to A. weight of the body B. weight of the fluid displaced by the body C. weight of the body and fluild displaced by the body .D difference of weights of the fluid displaced and that of the body E. none of these.4. A syphon is used A. to connect water reservoirs at different levels intervened by a hill B. to supply water to a town from higher level to lower level C. to fill up a tank with water at higher level from a lower level D. none of these.5. The momentum correction factor (β) for the viscous flow through a circular pipe is A. 1.25 B. 1.33 C. 1.50 D. 1.66 E. 2.006. If the total head of the nozzle of a pipe is 37.5 m and discharge is 1 cumec, the power generated is A. 400 H.P. B. 450 H.P. C. 500 H.P. D. 550 H.P.7. The side slope of Cipolletti weir is generally kept A. 1 to 4 B. 1 to 3 C. 1 to 2 D. 1 : 58. A short tube mouthpiece will not run full at its outlet if the head under which the orifice works, is A. less than 12.2 m of the water B. more than 12.2 m of the water C. equal of 12.2 m of water D. none of these.9. A piezometer opening in pipes measures A. velocity head B. static pressure C. total pressure D. negative static pressure.10. Reynold number is the ratio of initial force and A. viscosity B. elasticity C. gravitational force D. surface tension.11. The phenomenon occuring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream causing a distinct rise of liquid surface, is A. water hammer B. hydraulic jump C. critical discharge D. none of these.12. Highest dam in India, is A. Bhakra dam B. Hirakund dam C. Nagarjuna Sagar dam D. Iddiki dam.13. An independent mass of a fluid does not posses A. elevation energy B. kinetic energy C. pressure energy D. none of these.14. A tank 4m x 3m x 2m containing an oil of specific gravity 0.83 is moved with an acceleration g/2 m sec2. The ratio of the pressures at its bottom when it is moving vertically up and down, is A. 2 B. 3 C. 1/2 D. 1/315. The ratio of maximum velocity to average velocity of viscous fluid through a circular pipe is A. 0.5 B. 0.75 C. 1.25 D. 2.0016. The shear stress distribution in viscous fluid through a circular pipe is : A. maximum at the centre B. maximum at the inside of surface C. same throughout the section D. none of these.17. Maximum efficiency of transmission of power through a pipe, is A. 25% B. 33.3% C. 50% D. 66.67%.18. 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 D. two-third of the height of water on the sill C. one-fourth of the height of water on the sill E. none of these.19. The horizontal component of the force on a curved surface is equal to A. weight of liquid vertically below the curved surface B. force on a vetical projection of the curved surface C. product of pressure at its centroid and the area D. weight of liquid retained by the curved area.20. Hydrostatic pressure on a dam depends upon its A. length B. depth C. shape D. material E. both (b) and (c).21. The maximum vacuum created at the summit of a syphon is A. 2.7 m of water B. 7.4 m of water C. 5.5 m of water D. none.22. A pitot tube is used to measure A. pressure B. difference in pressure C. velocity of flow D. none of these.23. Unit of kinematic viscosity is A. m2/sec B. Newton sec/m2 C. Newton sec/m3 D. Kg sec/m2.24. An ideal flow of a liquid obeys A. Continuity equation B. Newton's law of viscosity C. Newton's second law of motion D. dynamic viscosity law,25. Most economical section of a circular channel for maximum discharge A. depth of water = 0.95 diameter of circular section B. hydraulic mean depth = 0.286 diameter of circular section C. wetted perimeter = 2.6 diameter of circular section D. wetted perimeter = 2.83 depth of water E. all the above.