electrical engineering

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12 Terms

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<p>What is the formula for a sinusoidal waveform?</p>

What is the formula for a sinusoidal waveform?

v(t) = V_m sin(ωt + φ)

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What is the RMS value formula for a sinusoidal voltage/current?

Xrms = Xm / √2

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What is a phasor?

A complex number representation of sinusoidal signals used in AC circuit analysis.

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What does impedance (Z) represent in AC circuits?

A generalization of resistance, measured in Ohms (Ω), represented as Z = R + jX.

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How is the impedance of a resistor represented?

Z_R = R

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What is the impedance formula for an inductor?

Z_L = jωL

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What is the impedance formula for a capacitor?

Z_C = 1/(jωC) = -j(1/(ωC))

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What is admittance (Y) in relation to impedance?

The reciprocal of impedance, Y = 1/Z = G + jB.

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What is the formula for apparent power (S) in AC circuits?

S = VI* (measured in Volt-Amperes VA).

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What is the formula for real power (P) in AC circuits?

P = Vrms Irms cos(θV - θI) (measured in Watts W).

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What is reactive power (Q) in AC circuits?

Power exchanged between source and reactive elements.