☰ Fluid Mechanics and Hydraulics (Civil Engineering) - MCQs

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Q19.

For a steep slope profile s1, The type of flow will de :

  • A. super critical
  • B. critical
  • C. sub critical
  • D. normal

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Q20.

A hydraulic turbine has a discharge of 5 m 3/ sec, when operation under a head of 20 m with a speed of 500 rpm. if it is to operate under a head of 15 m, for the same discharge , the rotational speed in rpm will approximately be:

  • A. 433
  • B. 403
  • C. 627
  • D. 388

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Q21.

A trapezoidal channel with bottom width of m 3 and side slope of lV :5H carries a discharge of 8.0 m 3/ sec with the flow depth of 1.5 The Froude number of the flow is :

  • A. 0.066
  • B. 0.132
  • C. 0.265
  • D. 0.528

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Q22.

A trapezoidal channel with bottom width of 3 m and side slope of 1v: 1 5 H carries a discharge of 8.0 m 3/ sec with the flow depth of 1.5 m. the Froude number of the flow is :

  • A. 0.066
  • B. 0. 132
  • C. 0.265
  • D. 0.528

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Q23.

water flows at a rate of 10 m 3/s in a rectangular channel 3 m wide .the critical depth of flow is :

  • A. 1. 13 m
  • B. 2 m
  • C. 1. 45 m
  • D. 1. 04 m

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Q24.

Cavitations in caused by:

  • A. high velocity
  • B. low pressure
  • C. high pressure
  • D. high temperature

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