Recent content by yaro99

  1. Y

    Engineering Find out the percent exergy loss

    Thank you for your response. Sorry for not using LATEX, it's been years since I've used it. I will start using it now. Thanks for applying it to my Relevant Equations. I actually didn't realize it was worked out in the book, it was a few pages before my particular problem. After looking...
  2. Y

    Engineering Find out the percent exergy loss

    Problem, with state values, and pie chart (Fig 4.20) showing answers: ^ This shows the system in question (Kapitza Liquefaction System). Methane gas enters into the compressor (c), then goes through the first heat exchanger (HX1). Some of it (z) gets routed to the expander (exp). Afterwards...
  3. Y

    Reaction forces in a two segment beam

    So my fbd is just missing an internal moment at B, and the resulting equation would be: +cw ∑M_B=0: -136 + 3*Cy + M_B = 0 I can't solve directly for Cy since I don't have M_B. Is this correct? Would I not still have to include an internal moment? Wouldn't a complete diagram look something like...
  4. Y

    Reaction forces in a two segment beam

    Homework Statement Homework Equations ∑Fx=0 ∑Fy=0 ∑M=0 The Attempt at a Solution [/B] I am just concerned with part a. I got the correct answers doing this: First, FBD of segment AB: +cw ∑M_A=0: -136 - 6*By = 0 By = -22.7N two ways to get Ay: one: +cw ∑M_B=0: -136 + 6*Ay = 0 Ay =...
  5. Y

    State-space modeling of a control system

    Homework Statement [/B] Here is the problem: And this is the system in question: Homework Equations G(s) = θ_0(s)/θ_i(s) = output/input (open-loop transfer function) The Attempt at a Solution I've been staring at this problem and looking through my textbook for over an hour but...
  6. Y

    Modeling a Control System using Transfer Functions

    Not much. My professor gave us one (bad) lecture on them and then gave us this HW. We are supposed to look up transfer functions on our own but my book was unhelpful. That's what confused me. If that's true then I'm wondering why the table asks for both.
  7. Y

    Modeling a Control System using Transfer Functions

    How would I do this for each particular block? I am supposed to fill out the table for each one. Also, in the table, what would be the difference between the Block and the Transfer Function?
  8. Y

    Modeling a Control System using Transfer Functions

    I don't understand this part, forgive my ignorance. Why am I multiplying, and what is the forward chain? We are talking about just the preamp here right?
  9. Y

    Modeling a Control System using Transfer Functions

    Homework Statement [/B] Homework Equations Listed under 2.1 in the image above. This is the only relevant equation that I'm aware of, but I'm almost sure that there is something else I need to know before I can solve the problem. The Attempt at a Solution I tried solving for the...
  10. Y

    Impedance as a function of angular frequency

    Okay I just realized I did my limit calculations wrong. Setting Z to 0 for a short circuit, and taking the limit of ω as Z approaches ∞ for an open circuit, I got these values: Series Circuit: ω = 1000 rad/s for a short circuit ω = 0 for an open circuit Parallel Circuit: ω = 0 for...
  11. Y

    Impedance as a function of angular frequency

    The limit as ω approaches infinity is infinity. So does that mean that for an open circuit (infinite impedance), ω=∞? That doesn't seem right, I may be misunderstanding.
  12. Y

    Impedance as a function of angular frequency

    I am not sure how I would solve for that. Z = j0.02(0) - j20000/0 I have a zero in the denominator. I know from calculus that the limit of 1/∞ = 0, so would that then mean that 1/0 = ∞? This wouldn't apply to real numbers, but maybe it works here because it is imaginary? If that is...
  13. Y

    Impedance as a function of angular frequency

    Homework Statement Homework Equations Z_L = jωL Z_C = 1/(jωC) = -j/(ωC)The Attempt at a Solution This is my attempt for the series combination: Z = jωL + 1/(jωC) Z = j0.02ω - j20000/ω = j(0.02ω - 20000/ω) Is there a way to simplify this further? What would a graph look like, if the...
  14. Y

    Impedance as a function of angular frequency

    Homework Statement Homework Equations Z_L = jωL Z_C = 1/(jωC) = -j/(ωC) The Attempt at a Solution This is my attempt for the series combination: Z = jωL + 1/(jωC) Z = j0.02ω - j20000/ω Is there a way to simplify this further? What would a graph look like, if the function...
Back
Top