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  • Question

  • The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)


  • Options
  • A. w.A
  • B. wx
  • C. wAx
  • D. wA/x

  • Correct Answer
  • wAx 

    • More questions

    • 1. The cutting force in up milling __________ per tooth movement of the cutter.

    • Options
    • A. is zero
    • B. is maximum
    • C. decreases from maximum to zero
    • D. increases from zero to maximum
      • Discuss
    • 2. The volumetric efficiency of the compressor is defined as the ratio of volume of free air delivery per stroke to the swept volume of the piston.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 3. The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ? = Density of the fluid)

    • Options
    • A. K.?
    • B. K/?
    • C. ?/K
    • D. K.?
      • Discuss
    • 4. In a four speed four-stroke Diesel engine, the intake valve

    • Options
    • A. opens at T.D.C. and closes at B.D.C.
    • B. opens at 20° before T.D.C. and closes at 35° after B.D.C.
    • C. opens at 10° after T.D.C. and closes at 20° before B.D.C.
    • D. none of the above
      • Discuss
    • 5. The maximum deflection of a cantilever beam of length l with a uniformly distributed load of w per unit length is (where W = wl)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. The stiffness of a closely-coiled helical spring is __________ proportional to number of turns.

    • Options
    • A. directly
    • B. inversely
      • Discuss
    • 7. The specific speed of a turbine is given by the equation

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. Compression members always tend to buckle in the direction of the

    • Options
    • A. axis of load
    • B. perpendicular to the axis of load
    • C. minimum cross section
    • D. least radius of gyration
      • Discuss
    • 9. In an ideal impulse turbine, the

    • Options
    • A. absolute velocity at the inlet of moving blade is equal to that at the outlet
    • B. relative velocity at the inlet of the moving blade is equal to that at the outlet
    • C. axial velocity at inlet is equal to that at the outlet
    • D. whirl velocity at inlet is equalto that at the outlet
      • Discuss
    • 10. A fine grained grinding wheel is used to grind hard materials.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss

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