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  • Question
  • The metacentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is


  • Options
  • A. 4.1 s
  • B. 5.2 s
  • C. 10.4 s
  • D. 14.1 s

  • Correct Answer
  • 10.4 s 


  • Hydraulics and Fluid Mechanics problems


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    • 1. A notch is used to measure __________ of liquids.

    • Options
    • A. pressure
    • B. discharge
    • C. velocity
    • D. volume
    • Discuss
    • 2. The product of mass and accelaration of flowing liquid is called

    • Options
    • A. inertia force
    • B. viscous force
    • C. gravity force
    • D. pressure force
    • Discuss
    • 3. A manometer is used to measure

    • Options
    • A. atmospneric pressure
    • B. pressure in pipes and channels
    • C. pressure in venturimeter
    • D. difference of pressures between two points in a pipe
    • Discuss
    • 4. When the Mach number is between __________ the flow is called super-sonic flow.

    • Options
    • A. 1 and 2.5
    • B. 2.5 and 4
    • C. 4 and 6
    • D. 1 and 6
    • Discuss
    • 5. The pressure of the liquid flowing through the divergent portion of a venturimeter

    • Options
    • A. remains constant
    • B. increases
    • C. decreases
    • D. depends upon mass of liquid
    • Discuss
    • 6. The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is

    • Options
    • A. 200 kg/m3
    • B. 400 kg/m3
    • C. 600 kg/m3
    • D. 800 kg/m3
    • Discuss
    • 7. The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)

    • Options
    • A. Q = Cd x bH1 2gh
    • B. Q = Cd x bH2 2gh
    • C. Q = Cd x b ( H2 - H1 ) 2gh
    • D. Q = Cd x bH 2gh
    • Discuss
    • 8. According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2 where m is equal to

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 9. If the coefficient of discharge is 0.6, then the discharge over a right angled notch is

    • Options
    • A. 0.417 H5/2
    • B. 1.417 H5/2
    • C. 4.171 H5/2
    • D. 7.141 H5/2
    • Discuss
    • 10. The point at which the resultant pressure on an immersed surface acts, is known as

    • Options
    • A. centre of gravity
    • B. centre of depth
    • C. centre of pressure
    • D. centre of immersed surface
    • Discuss


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