Civil Engineering Hydraulics Mock test – 1 Welcome to your Hydraulics Mock Test - 1 Take an exciting test in the topic of Hydraulics You have only 20 mins to complete the test (25 Questions) Wish you all the best!!! Name Email 1. If the Mach number for a fluid flow is less than 1, the flow is A. sonic B. supersonic C. sub-sonic D. none of these.2. Hydraulic radius is equal to A. area divided by the square of wetted perimeter B. area divided by wetted perimeter C. wetted perimeter divided by area D. square root of the area.3. The ratio of inertia force of a flowing fluid and the viscous force of the liquid is called : A. Renold's number B. Froude's number C. Euler's number D. Weber's number.4. Poise is the unit of A. viscosity B. velocity gradient C. mass density D. kinematic viscous.5. The instrument used for measuring the velocity of flow, is known as A. venturimeter B. orifice meter C. pitot tube D. none of these.6. In two dimensional flow the components of velocity are given by u = ax; v = by. The stream lines will be A. circular B. parabolic C. hyperbolic D. elliptical.7. Orifice-meter is used to measure A. pressure at the point B. discharge C. average speed D. velocity.8. The dimensional formula of force is A. MLT-2 B. M-1LT2 C. ML-2T D. M-1L2T-2 E. none of these.9. The ratio of the inertia and viscous forces acting in any flow, ignoring other forces, is called A. Euler number B. Frode number C. Reynold number D. Weber number.10. Water belongs to A. Newtonian fluids B. non-Newtonian fluids C. compressible fluid D. none of these.11. For mountaneous regions having steep slope, wagons for carrying liquid are made with bottom A. parallel to the road surface B. parallel to the horizontal surface C. inclined upward while moving upwards D. inclined downward while moving downwards.12. For a most economical rectangular channel, the hydraulic mean depth, is equal to A. the depth of flow B. half the depth of flow C. one-third depth of flow. D. None of these13. The flow is called rotational if its velocity normal to the plane of area is equal to A. angular velocity vector B. twice the angular velocity vector C. thrice the angular velocity vector D. none of these.14. Energy equation is usually applicable to A. non-uniform flow B. turbulent flow C. laminar flow D. steady flow.15. Total pressure on the top of a closed cylindrical vessesl completely filled with liquid, is directly proportional to A. radius B. (radius)2 C. (radius)3 D. (radius)4 E. none of these.16. Flow of water in pipes of diameter more than 3 metres, can be measured by A. pitot tube B. venturimeter C. orifice plate D. rotameter.17. To avoid the tendency of separation of liquid flow, the most suitable ratio of the diameters of the throat and the pipe, is A. 1/4 to 1/8 B. 1/3 to 1/2 C. 1/2 to 3/4. D. none of these.18. In a venturimeter, the divergent cone is kept A. shorter than convergent cone B. equal to covergent cone C. longer than convergent cone D. none of these.19. A water tank partially filled with water is being carried on a truck moving with a constant horizontal acceleration. The level of the water B. falls on the back side of the tank C. remains the same at both sides of the tank D. rises on the back side and falls on the front side E. none of these.20. The discharge through a V-notch weir varies as A. Sqrt(H) B. 1/Sqrt(H) C. H^3/2 D. H^7/2 E. H^5/2.21. In flowing liquids pitot tubes are used measure A. discharge B. pressure C. velocity D. depth.22. The upper surface of the weir over which water flows, is known as A. vein B. nappe C. sill D. none of these.23. For a long pipe, the head loss A. at the entrance is ignored B. at the outlet is ignored C. at the entrance and outlet both are ignored D. due to friction is ignored.24. Hydraulic grade line A. remains above the centre line of conduit B. remains below the centre line of conduit C. remains parallel to the centre line of conduit D. may be above or below the centre line of conduit.25. The minimum specific energy of flow of water in open channel is : (where hc is the critical depth) A. hc B. hc/2 C. 3hc/2 D. 2hc/3