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I Have An Engineering Homework Or Assignment Question

Personal Stories, Advice, and Support 2 People

    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

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    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

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    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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    2 days in a row because of homework and assignments... TuT But i'm still wide awake
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    My account name is Silverfeather21. I will talk about almost anything, and I will answer any question honestly; there are no limits to the questions!
    Silverfeather1993 Silverfeather1993 18-21, F 2 Responses 6 hrs ago

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    I'm stuck doing homework in a stuffy house on a hot day. Entertain me wif questions!
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    Send me your questions! :)
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