ME 340 Chapter 5 Summary

# ME 340 Chapter 5 Summary - can be represented as complex...

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Usman Ansari ME 340 ME 340 – Chapter 5 Summary Sinusoidal voltages are expressed as V(t)=Vmcos(ωt+θ), where Vm is the peak value of the voltage, ω is the angular frequency, and θ is the phase angle. Sine functions are converted to cosine functions, a uniform way to express the sinusoid. The average power delivered to a resistance can be obtained by computing the root mean square voltage or current. Sinusoids can be represented as phasors, which have a magnitude(Vm) and direction(θ). The resistance of capacitances and inductances
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Unformatted text preview: can be represented as complex impedances, and these can be added just like resistances in series or parallel to solve complex circuits. Node-voltages and the current and voltage division principles can also be applied in these cases. A complex network of circuit elements and sinusoidal sources can also be represented as a Thevenin equivalent, with a phasor voltage source in series with a complex impedance, or Norton equivalent, with a phasor current source in parallel with the Thevenin impedance. 1...
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