Question

For a given power system, its zero and maximum regulation will occur at the impedance angle of:

• A. 45°
• B. 0°
• C. 90°
• D. 60°

Hint:

Maximum and minimum voltage regulation in power systems occur at the impedance angle of 45°, where both resistance and reactance contribute equally.

Answer 1

The Correct Option is A

For a power system, the maximum and minimum voltage regulation occurs at the impedance angle of 45°. This is because the system’s voltage regulation is a function of both the resistance and reactance, and the optimal condition occurs when the impedance angle is 45°, which corresponds to a balanced mix of resistive and reactive components. Thus, the correct answer is 45°.