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Home ‣ Mechanical Engineering ‣ Hydraulics and Fluid Mechanics Comments
  • Question

  • The total energy line lies over the hydraulic gradient line by an amount equal to the


  • Options
  • A. pressure head
  • B. velocity head
  • C. pressure head + velocity head
  • D. pressure head - velocity head

  • Correct Answer
  • velocity head 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. The coefficient of viscosity may be determined by

    • Options
    • A. capillary tube method
    • B. orifice type viscometer
    • C. rotating cylinder method
    • D. all of these
      • Discuss
    • 2. The pressure measured with the help of a piezometer tube is in

    • Options
    • A. N/mm2
    • B. N/m2
    • C. head of liquid
    • D. all of these
      • Discuss
    • 3. When a tube of smaller diameter is dipped in water, the water rises in the tube due to viscosity of water.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

    • Options
    • A. equal to.
    • B. less than
    • C. more than
      • Discuss
    • 5. According to equation of continuity,

    • Options
    • A. w1a1 = w2a2
    • B. w1v1 = w2v2
    • C. a1v1 = a2v2
    • D. a1/v1 = a2/v2
      • Discuss
    • 6. Euler's equation in the differential form for the motion of liquids is given by

    • Options
    • A.
    • B.
    • C. ?.dp + g.dz + v.dv = 0
    • D. ?.dp - g.dz + v.dv = 0
      • Discuss
    • 7. The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.

    • Options
    • A. equal to
    • B. less than
    • C. more than
      • Discuss
    • 8. The kinematic viscosity is the

    • Options
    • A. ratio of absolute viscosity to the density of the liquid
    • B. ratio of density of the liquid to the absolute viscosity
    • C. product of absolute viscosity and density of the liquid
    • D. product of absolute viscosity and mass of the liquid
      • Discuss
    • 9. The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)

    • Options
    • A. Q = Cd x b2g(H2 - H1)
    • B. Q = Cd x b2g(H21/2 - H11/2)
    • C. Q = Cd x b2g(H23/2 - H13/2)
    • D. Q = Cd x b2g(H22 - H12)
      • Discuss
    • 10. The atomic mass of oxygen is

    • Options
    • A. 12
    • B. 14
    • C. 16
    • D. 32
      • Discuss

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