Answer to Question #87594 in Electrical Engineering for Jay H

Question

Calculate the voltage value of a sine wave at 135° whose VRMS= 1000 VAC. Show all work.

Answer 1

Usually a common sine wave is written as

$$V(t)=V_{RMS}\sqrt{2}\text{sin}(\omega t+\phi),$$

where $\omega=2\pi f$ - angular frequency,

$V_{RMS}\sqrt{2}=V_{amp}$ - amplitude (pike or maximum) value of the voltage,

$\phi$ - phase angle.

So in our problem the maximum amplitude voltage value is $1000\sqrt{2}=1414.2\text{ V}$.