1. What is Phase Angle?

The phase angle (φ) is the difference in phase between voltage and current in an AC circuit. It's calculated from the power factor (PF) using the arccosine function and is measured in degrees.

2. How Does the Calculator Work?

The calculator uses the phase angle equation:

Where:

• \( \phi \) — Phase angle in degrees
• \( PF \) — Power factor (unitless, between 0 and 1)

Explanation: The equation calculates the angle whose cosine is the given power factor, representing the phase difference between voltage and current waveforms.

3. Importance of Phase Angle Calculation

Details: Phase angle is crucial in AC circuit analysis, power systems, and electrical engineering. It helps determine the reactive power component and system efficiency.

4. Using the Calculator

Tips: Enter power factor value between 0 and 1. The calculator will compute the corresponding phase angle in degrees.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical phase angle value?
A: For purely resistive loads, phase angle is 0°. For inductive or capacitive loads, it typically ranges between -90° to +90°.

Q2: How does phase angle relate to power factor?
A: Power factor is the cosine of the phase angle (PF = cosφ). A phase angle of 0° means PF=1 (perfect).

Q3: What causes phase angle in AC circuits?
A: Phase angle occurs when circuit contains reactive components (inductors or capacitors) that cause current to lead or lag voltage.

Q4: Can phase angle be negative?
A: Yes, negative phase angle indicates capacitive load (current leads voltage), positive indicates inductive load (current lags voltage).

Q5: Why is phase angle important in power systems?
A: It helps analyze power quality, system efficiency, and reactive power compensation needs.