1. What is Electric Motor Torque?

Torque is the rotational equivalent of linear force in electric motors. It represents the motor's ability to overcome resistance to rotation and is crucial for determining the motor's performance in various applications.

2. How Does the Calculator Work?

The calculator uses the torque equation:

Where:

• \( \tau \) — Torque (N·m)
• \( P \) — Power (W)
• \( \omega \) — Angular speed (rad/s)

Explanation: The equation shows that torque is directly proportional to power and inversely proportional to angular speed.

3. Importance of Torque Calculation

Details: Calculating torque is essential for selecting the right motor for an application, ensuring proper performance, and preventing motor overload or underutilization.

4. Using the Calculator

Tips: Enter power in watts and angular speed in radians per second. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between torque and power?
A: Torque is the rotational force, while power is the rate at which work is done. Power combines torque and speed (P = τ × ω).

Q2: How do I convert RPM to rad/s?
A: Multiply RPM by 2π/60. For example, 1000 RPM = 1000 × (2π/60) ≈ 104.72 rad/s.

Q3: What are typical torque values for electric motors?
A: This varies greatly by motor size and type. Small motors might produce 0.1 N·m, while industrial motors can produce thousands of N·m.

Q4: Does torque change with speed in electric motors?
A: It depends on motor type. DC motors typically have high torque at low speed, while AC induction motors have a more complex torque-speed curve.

Q5: How does voltage affect torque?
A: In DC motors, torque is directly proportional to current, which is affected by voltage. Higher voltage typically allows for higher torque, within motor limits.