Voltage/VAR/Frequency Control Quiz

$P = V_m I_m \cos(\theta_v - \theta_i) + V_m I_m \cos(2\omega t + \theta_v + \theta_i)$

$P = \frac{V_m I_m}{8} \cos(\theta_v - \theta_i)$

$P = V_m I_m \cos(\theta_v - \theta_i) + V_m I_m \cos(2\omega t - \theta_v + \theta_i)$

$P = \frac{V_m I_m}{2} \cos(\theta_v - \theta_i)$ (correct)

$S = P + jQ$

$S = V I \cos(\theta) + j V I$

$S = V I$

$S = V I \cos(\theta) + j V I \sin(\theta)$ (correct)

Supports the system electromagnetically

Single system frequency

Ability to perform useful work (correct)

Voltage profile

<p>Frequency/real-power</p> Signup and view all the answers

<p>They are coupled</p> Signup and view all the answers