Question

Maximum deflection of the phaseangle

voltmeter occurs when what
phase relationships exists between
the two signals?
1. 0° or 90°
2. 0° or 180°
3. 90° or 120°
4. 90° or 180°

Answer 1

The phase angle voltmeter shows maximum deflection when the two signals are either in phase (0° phase difference) or completely out of phase (180° phase difference).

Step-by-step explanation:

The maximum deflection of the phase angle voltmeter occurs when the two signals being compared are either in phase (0° phase difference) or out of phase (180° phase difference). When two signals are in phase, their peaks and troughs line up, resulting in the maximum combined amplitude. Conversely, when two signals are 180° out of phase, their peaks line up with the troughs of the other signal, leading to cancellation if the signals have the same amplitude, or the maximum difference in amplitude otherwise.