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

  • The atmospheric pressure at sea level is


  • Options
  • A. 103 kN/m2
  • B. 10.3 m of water
  • C. 760 mm of mercury
  • D. all of these

  • Correct Answer
  • all of these 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. The viscosity of water is __________ than that of mercury.

    • Options
    • A. higher
    • B. lower
      • Discuss
    • 2. A weir is usually made of masonry or concrete.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 3. The hydraulic gradient line may be above or below the centre line of the pipe.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. Which of the following statement is correct?

    • Options
    • A. The algebraic sum of the forces, constituting the couple is zero.
    • B. The algebraic sum of the forces, constituting the couple, about any point is the same.
    • C. A couple cannot be balanced by a single force but can be balanced only by a couple of opposite sense.
    • D. all of the above
      • Discuss
    • 5. A framed structure is perfect, if the number of members are __________ (2j - 3), where j is the number of joints.

    • Options
    • A. equal to
    • B. less than
    • C. greater than
    • D. either (b) or (c)
      • Discuss
    • 6. The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = Total height of water above the weir = H + Ha H = Height of water, over the crest of the weir, and Ha = Height of water, due to velocity of approach)

    • Options
    • A. Cd x L2g [H1 - Ha]
    • B. Cd x L2g [H13/2 - Ha3/2]
    • C. Cd x L2g [H12 - Ha2]
    • D. Cd x L2g [H15/2 - Ha5/2]
      • Discuss
    • 7. The specific gravity has no units.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 8. The shear stress-strain graph for a newtonian fluid is a

    • Options
    • A. straight line
    • B. parabolic curve
    • C. hyperbolic curve
    • D. elliptical
      • Discuss
    • 9. If a pitot tube is placed with its nose upstream, downstream or sideways, the reading will be the same in every case.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The loss of pressure head in case of laminar flow is proportional to

    • Options
    • A. velocity
    • B. (velocity)2
    • C. (velocity)3
    • D. (velocity)4
      • Discuss

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