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

  • 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

  • Correct Answer
  • directly proportional 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. The dynamic viscosity of gases __________ with rise in temperature.

    • Options
    • A. remain unaffected
    • B. increases
    • C. decreases
      • Discuss
    • 2. 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
    • 3. Venturimeter is used to

    • Options
    • A. measure the velocity of a flowing liquid
    • B. measure the pressure of a flowing liquid
    • C. measure the discharge of liquid flowing in a pipe
    • D. measure the pressure difference of liquid flowing between two points in a pipe line
      • Discuss
    • 4. A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.

    • Options
    • A. steady
    • B. streamline
    • C. turbulent
    • D. unsteady
      • Discuss
    • 5. The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.

    • Options
    • A. plus
    • B. minus
      • Discuss
    • 6. Bernoulli's equation is applied to

    • Options
    • A. venturimeter
    • B. orifice meter
    • C. pitot tube
    • D. all of these
      • Discuss
    • 7. The velocity at which the turbulent flow starts is known as higher critical velocity.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 8. The property of a liquid which enables it to resist tensile stress is called its surface tension.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 9. 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
    • 10. 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

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