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Hydraulics and Fluid Mechanics problems

  • 1. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where w = Specific weight of liquid, and H = Height of liquid)

  • Options
  • A. wH
  • B. wH/2
  • C. wH2/2
  • D. wH2/3
    • Discuss
  • 2. A manometer is used to measure

  • Options
  • A. low pressure
  • B. moderate pressure
  • C. high pressure
  • D. atomospheric pressure
    • Discuss
  • 3. The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.

  • Options
  • A. The bodies A and B have equal stability
  • B. The body A is more stable than body B
  • C. The body B is more stable than body A
  • D. The bodies A and B are unstable
    • Discuss
  • 4. 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
  • 5. 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
  • 6. 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
  • 7. 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
  • 8. A siphon is used to connect two reservoirs at different levels intervened by a high ridge.

  • Options
  • A. True
  • B. False
    • Discuss
  • 9. 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
    • Discuss
  • 10. 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

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