I Have An Engineering Homework Or Assignment Question

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    Work Consumed By Pump

    For a pump, why do I need to use Bernoulli's equation: (P1)/(rho1) + [(v1)^2]/2 + (z1)*g + work_in = (P2)/(rho2) + [(v2)^2]/2 + (z2)*g + energy_loss instead of energy balance used for compressors, turbines ect.: E_in - E_out = delta_E_system (h1) + Work_in - (h2...
    maydaybandit maydaybandit
    22-25, F
    2 Responses Oct 19, 2009

    Combined Loading - Stresses

    As part of an assignment, I need to find the maximum principal stress on the shaft due to the bending, twist and shear (See image below - sorry about the mess and illegibility).  I was going to use 'option 1' but I'm not sure I can since the maximum occurs at different...
    maydaybandit maydaybandit
    22-25, F
    5 Responses Sep 22, 2009

    Streamline Section Dimensions To Minimise Area For A Given Moment Of Inertia

    I need to find the values of thickness (t), mean diameter (D) and mean length (L) that will give the minimum area for the streamlined section, given that it's moment of inertia is 5.42 in^4. Some equations: (the I's and A's after all K's here are meant to be subscripts, but they...
    maydaybandit maydaybandit
    22-25, F
    6 Responses May 25, 2010
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