The formula to calculate the Mechanical Efficiency is:
\[ \eta_m = \frac{\eta_e \cdot V_o \cdot I_a}{\omega_s \cdot \tau} \]
Mechanical Efficiency is the ratio of the power delivered by a mechanical system to the power supplied to it.
Let's assume the following values:
Using the formula:
\[ \eta_m = \frac{0.86 \cdot 150 \cdot 0.75}{321 \cdot 0.62} = 0.486132047030449 \]
| Electrical Efficiency (ηe) | Output Voltage (Vo) | Armature Current (Ia) | Angular Speed (ωs) | Torque (τ) | Mechanical Efficiency (ηm) |
|---|---|---|---|---|---|
| 0.8 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.452215857703 |
| 0.81 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.457868555924 |
| 0.82 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.463521254145 |
| 0.83 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.469173952367 |
| 0.84 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.474826650588 |
| 0.85 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.480479348809 |
| 0.86 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.486132047030 |
| 0.87 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.491784745252 |
| 0.88 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.497437443473 |
| 0.89 | 150 V | 0.75 A | 321 rad/s | 0.62 Nm | 0.503090141694 |