Recent content by thorx440

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    Thermodynamics turbocharger question

    Homework Statement A 10 L truck engine has a volumetric efficiency of 100%. It has a turbocharger which increased the mass flow of air and its pressure by a factor of 2 when the engine is running at 4300 rpm. Find the turbocharger rpm, efficiency, and the temperature of the air leaving the...
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    Engineering How to tell if the circuit is a High or low pass filter?

    The voltage drop across the inductor plus the voltage drop across the resistor would equal the voltage source (voltage divider) So at high frequencies, the CLR would behave like a LR circuit, which is a first order low pass filter. but since this only occurs at high frequencies, would this mean...
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    Engineering How to tell if the circuit is a High or low pass filter?

    ah thank you for the explanation! I understand now, was confused about which filters allowed what frequencies through. Now taking the same thought a step further, a second order filter is one that involves a capacitor, inductor, as well as a resistor. If we look at a first order high pass...
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    Engineering How to tell if the circuit is a High or low pass filter?

    I understand what you are saying, when frequency is high, the impedance of the capacitor is negligible. The output voltage is equal to the voltage across the resistor, which is equal to the input voltage. But how does that tell me if it is a high or low pass filter? All the equations have told...
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    Engineering How to tell if the circuit is a High or low pass filter?

    Homework Statement Draw the circuit diagram of a second-order series High pass filter RLC filter. Given: R = 50 ohm Q_s = .5 f_0 = 30 MHz determine L and C Homework Equations f_0 = 1/(2*pi*sqrt(LC)) Q_s = 2*pi*f_0*L/R = 1/(2*pi*f_0*R)The Attempt at a Solution I know how to find L and C, given...
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    Find the actual sum of a fourier series at a given point

    The question does asks for the values at x = 0, x = 1/4, x = 1/2, and x = 1, for all three methods, the full FS, cosine and sine expansions. For the full FS I found that f(0) = 1/2 f(1/4) = ?? f(1/2) = 1/2 f(1) = 1/2 The only one I am unsure of how to calculate now is f(1/4) because I cannot...
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    Find the actual sum of a fourier series at a given point

    I drew out the function, and got basically the step function.and yes you are correct, the function is discontinuous at all intervals of 1/2. To find f(0+) and f(0-) I just looked at the graph f(0+) is 0 because the value coming in from the right hand side is 0, and f(0-) is 1 because the value...
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    Find the actual sum of a fourier series at a given point

    Homework Statement You have series expansions of the function f(x) = 0 from 0 to .5, and 1 from .5 to 1 : the halfrange cosine series, the half-range sine series, and the Fourier series. For each of these series, find the actual sum of the series at x = 0, and x =1/2, and x =1 Homework...
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    Find current using Mesh Analysis

    I understand now. Making both meshes go clockwise gives me the following equations (15)(i1)-(10)(i2)= 77 (-10)(i1)+(15)i2) = -16 solving for this gives me i1 = 7.96 and i2 = 4.24 i1 = i_a since the direction of i1 is the same as the direction if i_a. i2 = -i_c since the direction of i2 is the...
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    Find current using Mesh Analysis

    So what you're saying is that in both equations, i2 should have the same sign? so it should be: equation from mesh 1: (15)(i1) - (10)(i2) = 77 equation from mesh 2: (-10)(i1) -(15)(i2) = 16also, the reason I chose to pick two different directions for the mesh currents is because of the...
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    Find current using Mesh Analysis

    Homework Statement Use the mesh-current method to find the branch currents ia, ib, and ic in the circuit in figure.(Figure 1) And find currents i_a, i_b, and i_c if the polarity of the 77V source is reversed. The values of v1 and v2 are 77V and 16V , respectively. Homework Equations Mesh...
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