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Home Mechanical Engineering Hydraulics and Fluid Mechanics See What Others Are Saying!
  • 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 use of heat exchangers is made in

    • Options
    • A. radiators in automobile
    • B. condensers and boilers in steam plants
    • C. condensers and evaporators in refrigeration and air conditioning units
    • D. all of the above
    • Discuss
    • 2. The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)

    • Options
    • A. remains constant
    • B. decreases
    • C. increases
    • Discuss
    • 3. A round nose tool may be fed eitner from left to right end or from right to left end of the lathe bed.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 4. The ratio of the workdone on the blades to the energy supplied to the blades, is called

    • Options
    • A. blading efficiency
    • B. nozzle efficiency
    • C. gross or stage efficiency
    • D. mechanical efficiency
    • Discuss
    • 5. The sparking in a petrol engine increases pressure and temperature of the products of combustion, but the volume remains constant.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 6. The hydraulic efficiency of an impulse turbine is the

    • Options
    • A. ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
    • B. ratio of the actual work available at the turbine to the energy imparted to the wheel
    • C. ratio of the work done on the wheel to the energy of the jet
    • D. none of the above
    • Discuss
    • 7. Which of the following inpurity in cast iron makes it hard and brittle?

    • Options
    • A. Silicon
    • B. Sulphur
    • C. Manganese
    • D. Phosphorus
    • Discuss
    • 8. In a simple bending of beams, the stress in the beam varies

    • Options
    • A. linearly
    • B. parabolically
    • C. hyperbolically
    • D. elliptically
    • Discuss
    • 9. Coefficient of friction depends upon

    • Options
    • A. area of contact only
    • B. nature of surface only
    • C. both (a) and (b)
    • D. none of these
    • Discuss
    • 10. If clearance volume of I.C. engines is increased, the compression ratio will

    • Options
    • A. increase
    • B. decrease
    • C. remain constant
    • D. be doubled
    • Discuss


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