11. Some synchrophase systems use a knob for the pilot to control the phase angle . 12. In the following calculations, all phase angles are expressed in degrees rather than radians. 13. A typical SCR based light dimmer which dims the light through phase angle control. 14. Those observations had then to be analyzed, to derive the coefficients and phase angles . 15. Synchroscopes measure and display the frequency difference and phase angle between two power systems. 16. At phase angles exceeding 90?( crescent phase ) the brightness falls off especially sharply. 17. Example : The active power is and the phase angle between voltage and current is 45.6? 18. The slack bus is the only bus for which the system reference phase angle is defined. 19. Approaching phase angle 0?( fully illuminated phase ) the curve rises to a sharp peak. 20. At a phase angle of zero degrees, all shadows disappear and the object is fully illuminated.
