Ac Motor Torque Calculator With Speed

AC Motor Torque Formula:

\[ Torque = \frac{Power}{2 \pi \times \frac{Speed}{60}} \]

Torque:

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1. What is AC Motor Torque Calculation?

AC motor torque calculation determines the rotational force produced by an AC motor based on its power output and rotational speed. This is essential for understanding motor performance and selecting appropriate motors for specific applications.

2. How Does the Calculator Work?

The calculator uses the torque formula:

\[ Torque = \frac{Power}{2 \pi \times \frac{Speed}{60}} \]

Where:

\( Power \) — Motor power output in watts (W)
\( Speed \) — Rotational speed in revolutions per minute (RPM)
\( 2\pi \) — Constant representing full rotation in radians
\( 60 \) — Conversion factor from minutes to seconds

Explanation: The formula converts RPM to radians per second, then divides power by angular velocity to obtain torque in newton-meters (N·m).

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for motor selection, system design, and ensuring proper performance in various applications including industrial machinery, automotive systems, and consumer appliances.

4. Using the Calculator

Tips: Enter power in watts and speed in RPM. Both values must be positive numbers. The calculator will provide torque in newton-meters (N·m).

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between power, speed, and torque?
A: Torque is inversely proportional to speed when power is constant. Higher speed results in lower torque, and vice versa.

Q2: What are typical torque values for AC motors?
A: Torque values vary significantly based on motor size and design, ranging from fractional N·m for small motors to thousands of N·m for large industrial motors.

Q3: Can this formula be used for DC motors as well?
A: Yes, the fundamental relationship between power, torque, and speed applies to both AC and DC motors.

Q4: How does motor efficiency affect torque calculation?
A: This formula calculates theoretical torque. Actual torque may be lower due to efficiency losses in the motor.

Q5: What if I have horsepower instead of watts?
A: Convert horsepower to watts first (1 HP = 745.7 W) before using the calculator.