1. What is Electric Motor Mechanical Output?

The mechanical output of an electric motor is the actual usable power delivered at the motor's shaft. It's calculated by multiplying the electrical input power by the motor's efficiency.

2. How Does the Calculator Work?

The calculator uses the mechanical power formula:

Where:

• \( P_{mech} \) — Mechanical power output (watts)
• \( P_{elec} \) — Electrical power input (watts)
• \( Efficiency \) — Motor efficiency (decimal between 0 and 1)

Explanation: The formula accounts for energy losses in the motor, converting electrical power to mechanical power based on the motor's efficiency.

3. Importance of Mechanical Power Calculation

Details: Calculating mechanical output is crucial for sizing motors for specific applications, evaluating performance, and determining energy efficiency.

4. Using the Calculator

Tips: Enter electrical power in watts and efficiency as a decimal (e.g., 0.85 for 85%). Efficiency must be between 0 and 1.

5. Frequently Asked Questions (FAQ)

Q1: What is typical motor efficiency?
A: Standard motors typically range from 70% to 96% efficient, with higher efficiency in larger motors and premium models.

Q2: How does efficiency vary with load?
A: Motors are most efficient at 75-100% of rated load. Efficiency drops significantly below 50% load.

Q3: What affects motor efficiency?
A: Factors include motor size, design, quality, operating temperature, and maintenance condition.

Q4: Can efficiency be greater than 1?
A: No, efficiency is always ≤1 (100%). Values >1 would violate energy conservation laws.

Q5: How to improve mechanical output?
A: Either increase electrical input power or improve efficiency through better motor selection or maintenance.