Answered Questions

  • IC Engine Efficiency

    With increasing temperature of intake air IC engine efficiency will increase or decrease? Explain

    G.Hari pratap

    • Mar 18th, 2018

    In diesel engine efficiency increases due to increases of intake air

    Shahrukh

    • Dec 4th, 2017

    If we increase temperature of intake air then volume of air is increased and hence density will decrease because of this pressure of inlet air is decrease therefore we does not get proper quantity of air to expands and hence expansion ratio will decrease therefore efficiency will decrease....

  • Pressure v/s Stress

    Though units for pressure and stress are same (i.e N/mm2)What is the difference between stress and pressure?

    Star Read Best Answer

    Editorial / Best Answer

    abhishank  

    • Member Since Jun-2009 | Jun 28th, 2009


    Stress is restoring force developed in the body due to any tensile, compressive or any other force per unit area and on the other hand pressure is force applied on a body per unit area.

    vinay kalgotra

    • Aug 22nd, 2017

    Brother as you said, but in some cases like in wall, eg. we are pressure applied on the wall it is also a scalar quantity.....so, how would we say pressure is only applied in case of fluid..

    KAMAL SHARMA

    • Jul 20th, 2017

    1. Pressure applied on fluid (Gas & Liquid) where as stress applied on solid.
    2. Pressure act perpendicular only where stress act perpendicular as well as inclined also.
    3. Pressure is only +ve magnitude but stress have both +ve and -ve.
    4. Pressure is external force and stress is internal force