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  • Question

  • The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by


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  • A. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is
  • B. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is
  • C. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is
  • D. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is

  • Correct Answer
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    • Hydraulics and Fluid Mechanics problems

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    • 1. A manometer can be used to measure vacuum pressures.

    • Options
    • A. Agree
    • B. disagree
      • Discuss
    • 2. A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

    • Options
    • A. it is easier to see through the glass tube
    • B. glass tube is cheaper than a metallic tube
    • C. it is not possible to conduct this experiment with any other tube
    • D. all of the above
      • Discuss
    • 3. A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is

    • Options
    • A. 2.89 kN
    • B. 8.29 kN
    • C. 9.28 kN
    • D. 28.9 kN
      • Discuss
    • 4. The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. A flow in which __________ force is dominating over the viscosity is called turbulent flow.

    • Options
    • A. elastic
    • B. surface tension
    • C. viscous
    • D. inertia
      • Discuss
    • 7. When the pressure intensity at a point is less than the local atmospheric pressure, then the difference of these two pressures is called vacuum pressure.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 8. Which of the following statement is wrong?

    • Options
    • A. A flow whose streamline is represented by a curve, is called two dimensional flow.
    • B. The total energy of a liquid particle is the sum of potential energy, kinetic energy and pressure energy.
    • C. The length of divergent portion in a venturimeter is equal to the convergent portion.
    • D. A pitot tube is used to measure the velocity of flow at the required point in a pipe.
      • Discuss
    • 9. The discharge through an external mouthpiece is given by (where a = Cross-sectional area of the mouthpiece, and H = Height of liquid above the mouthpiece)

    • Options
    • A. 0.855 a2gH
    • B. 1.855 aH2g
    • C. 1.585 a2gH
    • D. 5.85 aH2g
      • Discuss
    • 10. The depth of water in a channel corresponding to the minimum specific energy is known as critical depth.

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

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