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Home ‣ Mechanical Engineering ‣ Hydraulics and Fluid Mechanics See What Others Are Saying!
  • Question

  • The total pressure on the top of a closed cylindrical vessel competely filled up with a liquid is


  • Options
  • A. directly proportional to (radius)2
  • B. inversely proportional to (radius)2
  • C. directly proportional to (radius)4
  • D. inversely proportional to (radius)4

  • Correct Answer
  • directly proportional to (radius)4 

    • More questions

    • 1. An ideal machine is one whose efficiency is

    • Options
    • A. between 60 and 70 %
    • B. between 70 and 80%
    • C. between 80 and 90%
    • D. 100%
      • Discuss
    • 2. A push broach as compared to pull broach

    • Options
    • A. has less number of teeth
    • B. is short and stocky
    • C. removes less material for each pass of the tool
    • D. all of the above
      • Discuss
    • 3. The defect which takes place due to imperfect packing of atoms during crystallisation is known as

    • Options
    • A. line defect
    • B. surface defect
    • C. point defect
    • D. none of these
      • Discuss
    • 4. Which of the following would lead to a reduction in thermal resistance?

    • Options
    • A. In conduction, reduction in the thickness of the material and an increase in thermal conductivity.
    • B. In convection, stirring of the fluid and cleaning the heating surface.
    • C. In radiation, increasing the temperature and reducing the emissivity.
    • D. all of the above
      • Discuss
    • 5. R-12 is generally preferred over R-22 in deep freezers since

    • Options
    • A. it has low operating pressures
    • B. it gives higher coefficient of performance
    • C. it is miscible with oil over large range of temperatures
    • D. all of the above
      • Discuss
    • 6. Which of the following statement is correct?

    • Options
    • A. The human body can lose heat even if its temperature is less than the atmospheric temperature.
    • B. The increase in air movement increases the evaporation from the human body.
    • C. The warm air increases the rate of radiation of heat from the human body.
    • D. both (a) and (b)
      • Discuss
    • 7. According to Euler's column theory, the crippling load for a column of length (l) with one end fixed and the other end hinged, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is

    • Options
    • A. m1/m2
    • B. m1.g sin ?
    • C. m1.m2/m1+m2
    • D.
      • Discuss
    • 9. Reynolds number is the ratio of

    • Options
    • A. energy transferred by convection to that by conduction
    • B. kinematic viscosity to thermal diffusivity
    • C. inertia force to viscous force
    • D. none of the above
      • Discuss
    • 10. The maximum efficiency of a lifting machine is

    • Options
    • A. 1/m
    • B. V.R./m
    • C. m/V.R.
    • D. 1/(m x V.R.)
      • Discuss

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