2. Questions Bank
  3. Railways
  4. NTPC (Technical Ability)
  5. Metal Forming, Casting and Cutting

Railways NTPC (Technical Ability) Metal Forming, Casting and Cutting Question Bank Metal Casting

  • question_answer
    Three immiscible liquids of specific densities \[\rho ,\,2\rho \] and \[3\rho \] are kept in a jar. The height of the liquids a jar and at the piezometer fitted to the bottom of the air are as shown in the given figure. The ratio H/h is:

    A) 4                                 

    B) 3.5              

    C) 3                                 

    D) 2.5

    Correct Answer: C

    Solution :

    \[(3\rho h+3ph+3\rho h)g=3\rho gH\] \[9\rho gh=3\rho gh,\,or\,H/h=3\]


You need to login to perform this action.
You will be redirected in 3 sec spinner