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Hydraulics problems

  • 1. The notch angle for maximum discharge over a triangular notch, is

  • Options
  • A. 30°
  • B. 60°
  • C. 90°
  • D. 120°
    • Discuss
  • 2. The flow in a channel is said to be non-uniform, if

  • Options
  • A. free water surface of an open channel is not parallel to the bed of channel
  • B. head needed to overcome frictional reistance is less than the drop in elevation of channel bed
  • C. head needed to overcome frictional resistance is more than the drop in elevation of channel bed
  • D. all the above.
    • Discuss
  • 3. The gases are considered incompressible if Match number is

  • Options
  • A. equal to 1.0
  • B. equal to 1.5
  • C. is more than 0.5
  • D. less than 0.2
    • Discuss
  • 4. If H is the depth of water retained by a vertical wall, the height of centre of pressure above the bottom is

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 5. To replace a pipe of diameter D by n parallel pipes of diameter d, the formula is

  • Options
  • A.
  • B.
  • C.
  • D.
  • E.
    • Discuss
  • 6. In a short cylindercial external mouthpiece, the venacontracta occurs at a distance from the outlet of orifice equal to

  • Options
  • A. diameter of the orifice
  • B. one-fourth the diameter of the orifice
  • C. one-third the diameter of the orifice
  • D. two-third the diameter of the orifice
    • Discuss
  • 7. For maximum power transmission through a nozzle, (where hf is the head lost due to friction)

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 8. The hydrostatic force acts through

  • Options
  • A. centre of pressure
  • B. centre of top edge
  • C. centre of bottom edge
  • D. metacentre.
    • Discuss
  • 9. An open container filled with water is moved vertically upward with a uniform linear acceleration. The pressure at its bottom will be

  • Options
  • A. greater than static pressure
  • B. equal to static pressure
  • C. lesser than static pressure
  • D. none of these.
    • Discuss
  • 10. Mass density of liquid (?) is given by

  • Options
  • A.
  • B.
  • C.
  • D. all the above.
    • Discuss

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