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Civil Engineering :: Hydraulics and Fluid Mechanics - Civil Engineering

  1. Which of the following is an incorrect statement ?

  2. A.

     Coefficient of contraction of a venturimeter is unity

    B.

     Flow nozzle is cheaper than venturimeter but has higher energy loss

    C.

     Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined

    D.

     None of the above statement is correct


  3. Flow occurring in a pipeline when a valve is being opened is

  4. A.

     steady

    B.

     unsteady

    C.

     laminar

    D.

     vortex


  5. The speed of sound in a ideal gas varies directly as its

  6. A.

     absolute temperature

    B.

     temperature

    C.

     density

    D.

     modulus of elasticity


  7. Liquids transmit pressure equally in all the directions. This is according to

  8. A.

     Boyle’s law

    B.

     Archimedes principle

    C.

     Pascal’s law

    D.

     Newton’s formula


  9. The velocity of jet of water travelling out of opening in a tank filled with water is proportional to

  10. A.

     head of water (h)

    B.

     h2

    C.

     V/T

    D.

     h2


  11. The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is (where R is radius of pipe)

  12. A.

     0.223 R

    B.

     0.423 R

    C.

     0.577 R

    D.

     0.707 R


  13. A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

  14. A.

     0.5

    B.

     0.4

    C.

     0.515

    D.

     0.5


  15. Hot wire anemometer is used to measure

  16. A.

     discharge

    B.

     velocity of gas

    C.

     pressure intensity of gas

    D.

     pressure intensity of liquid


  17. The pitot tube is used to measure

  18. A.

     velocity at stagnation point

    B.

     stagnation pressure

    C.

     static pressure

    D.

     dynamic pressure


  19. Hot wire anemometer is used to measure

  20. A.

     pressure in gases

    B.

     liquid discharge

    C.

     pressure in liquids

    D.

     gas velocities