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

  • In open channels, the specific energy is the


  • Options
  • A. total energy per unit discharge
  • B. total energy measured with respect to the datum passing through the bottom of the channel
  • C. total energy measured above the horizontal datum
  • D. kinetic energy plotted above the free surface of water

  • Correct Answer
  • total energy measured with respect to the datum passing through the bottom of the channel 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. A siphon is used to connect two reservoirs at different levels intervened by a high ridge.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 3. In one dimensional flow, the flow

    • Options
    • A. is steady and uniform
    • B. takes place in straight line
    • C. takes place in curve
    • D. takes place in one direction
      • Discuss
    • 4. The weight per unit volume of a liquid at a standard temperature and pressure is called

    • Options
    • A. specific weight
    • B. mass density
    • C. specific gravity
    • D. none of these
      • Discuss
    • 5. The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

    • Options
    • A. Cd 2g x H
    • B. Cd 2g x H3/2
    • C. Cd 2g x H2
    • D. Cd 2g x H5/2
      • Discuss
    • 6. The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy 's coefficient of friction for pipe, and l = Length of pipe )

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. The maximum discharge over a broad crested weir is

    • Options
    • A. 0.384 Cd x L x H1/2
    • B. 0.384 Cd x L x H3/2
    • C. 1.71 Cd x L x H1/2
    • D. 1.71 Cd x L x H3/2
      • Discuss
    • 8. A structure whose width is __________ the width of the channel, is called a flumed structure.

    • Options
    • A. less than
    • B. more than
      • Discuss
    • 9. Coefficient of resistance is the ratio of

    • Options
    • A. actual velocity of jet at vena contracta to the theoretical velocity
    • B. area of jet at vena contracta to the area of orifice
    • C. loss of head in the orifice to the head of water available at the exit of the orifice
    • D. actual discharge through an orifice to the dieoretical discharge
      • Discuss
    • 10. An error of 1% in measuring head over the apex of the notch (H) will produce an error of __________ in discharge over a triangular notch.

    • Options
    • A. 1%
    • B. 1.5%
    • C. 2%
    • D. 2.5%
      • Discuss

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