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Home ‣ Civil Engineering ‣ Hydraulics See What Others Are Saying!
  • Question

  • The ratio of the inertia and gravitational force acting in any flow, ignoring other forces, is called


  • Options
  • A. Euler number
  • B. Frode number
  • C. Reynold number
  • D. Weber number.

  • Correct Answer
  • Frode number 

    • More questions

    • 1. When the ratio of the moment M to axial load P is greater than, the resultant of the compressive bearing pressure which acts at a distance Y from one side, is given by

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
      • Discuss
    • 2. Phytometer method is generally used for the measurement of

    • Options
    • A. interception
    • B. evaporation
    • C. transpiration
    • D. none of these.
      • Discuss
    • 3. A-2-hour unit hydrograph can be approximated as trapezoidal as shown in the below figure. The unit hydrograph refers to catchment of area

    • Options
    • A. 138.24 km2
    • B. 0.0384 km2
    • C. 384 m2
    • D. 3840 m2
      • Discuss
    • 4. The dimensions for the flexural rigidity of a beam element in mass (M), length (L) and time (T) is given by

    • Options
    • A. MT-2
    • B. ML3T-2
    • C. ML-1T-2
    • D. M-1T2
      • Discuss
    • 5. If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is

    • Options
    • A. 1 in 60
    • B. 1 in 100
    • C. 1 in 120
    • D. none of these.
      • Discuss
    • 6. Pick up the correct statement from the following :

    • Options
    • A. Run off and surface run off are the same
    • B. Run off includes the water flowing over the surface
    • C. Run off is sometimes called discharge of the river
    • D. Surface run off is sometimes called stream flow.
      • Discuss
    • 7. The dock wall is designed as a gravity retaining wall and is tested for

    • Options
    • A. back fill pressure when the dock is empty
    • B. maximum water pressure from the dock without any back fill
    • C. the load charge transmitted to the dock by the movement of loaded vehicles or trains on the way
    • D. all of the above.
      • Discuss
    • 8. Continuous flow of water can be expected from

    • Options
    • A. gravity springs
    • B. surface springs
    • C. artesian springs
    • D. none of these.
      • Discuss
    • 9. Best ballast contains stones varying in size from

    • Options
    • A. 1.5 cm to 3 cm
    • B. 2.0 cm to 4 cm
    • C. 2.0 cm to 5 cm
    • D. 2.5 cm to 6 cm
      • Discuss
    • 10. The Brake Horse power of the motor (efficiency 60%) required for a pump of capacity 0.075 cumec for a total lift of 12 m, is

    • Options
    • A. 10
    • B. 15
    • C. 20
    • D. 25
      • Discuss

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