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  • Question

  • An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 which the free surface of liquid makes with the horizontal is such that (where a = Horizontal acceleration of the tank, and g = Acceleration due to gravity)


  • Options
  • A. tan ? = a/g
  • B. tan ? = 2 a/g
  • C. tan ? = a/2g
  • D. tan ? = a2/2g

  • Correct Answer
  • tan ? = a/g 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. When the pipes are in series, the total head loss is equal to the sum of the head loss in each pipe.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 2. If an incompressible liquid is continuously flowing through a pipe, the quantity of liquid passing per second is different at different sections.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. The discharge over a triangular notch is

    • Options
    • A. inversely proportional to H3/2
    • B. directly proportional to H3/2
    • C. inversely proportional to H5/2
    • D. directly proportional to H5/2
      • Discuss
    • 4. In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

    • Options
    • A. double
    • B. four times
    • C. eight times
    • D. sixteen times
      • Discuss
    • 5. A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if

    • Options
    • A. length of both the pipes is same
    • B. diameter of both the pipes is same
    • C. loss of head and discharge of both the pipes is same
    • D. loss of head and velocity of flow in both the pipes is same
      • Discuss
    • 6. The tendency of a liquid to uplift a submerged body, because of the upward thrust of the liquid, is known as buoyancy.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 7. The flow of water through the hole in the bottom of a wash basin is an example of

    • Options
    • A. steady flow
    • B. uniform flow
    • C. free vortex
    • D. forced vortex
      • Discuss
    • 8. The velocity at which the laminar flow stops, is known as

    • Options
    • A. velocity of approach
    • B. lower critical velocity
    • C. higher critical velocity
    • D. none of these
      • Discuss
    • 9. The ratio of the inertia force to the gravity force is called Froude number.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 10. 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

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