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

  • The property of a liquid which enables it to resist tensile stress is called its surface tension.


  • Options
  • A. Agree
  • B. Disagree

  • Correct Answer
  • Agree 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. The velocity at which the turbulent flow starts is known as higher critical velocity.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 2. Bernoulli's equation is applied to

    • Options
    • A. venturimeter
    • B. orifice meter
    • C. pitot tube
    • D. all of these
      • Discuss
    • 3. According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.

    • Options
    • A. equal to
    • B. directly proportional
    • C. inversely proportional
      • Discuss
    • 4. The dynamic viscosity of gases __________ with rise in temperature.

    • Options
    • A. remain unaffected
    • B. increases
    • C. decreases
      • Discuss
    • 5. According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

    • Options
    • A. Cd(L - nH)2gH
    • B. Cd(L - 0.1nH)2gH3/2
    • C. Cd(L - nH)2gH2
    • D. Cd(L - 0.2nH)2gH5/2
      • Discuss
    • 6. The discharge through a channel of rectangular section will be maximum, if

    • Options
    • A. its depth is twice the breadth
    • B. its breadth is twice the depth
    • C. its depth is thrice the breadth
    • D. its breadth is thrice the depth
      • Discuss
    • 7. A hemispherical tank of radius (R) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to lower the level of liquid from (H1) to (H2) will be

    • Options
    • A.
    • B.
    • C.
    • D. none of the above
      • Discuss
    • 8. The coefficient of venturifiume, generally, lies between

    • Options
    • A. 0.3 to 0.45
    • B. 0.50 to 0.75
    • C. 0.75 to 0.95
    • D. 0.95 to 1.0
      • Discuss
    • 9. An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice.

    • Options
    • A. free
    • B. partially
    • C. full
      • Discuss
    • 10. A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

    • Options
    • A. notch
    • B. weir
    • C. mouthpiece
    • D. nozzle
      • Discuss

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