Motor torque from power and speed

Calculates approximate power from torque and rotational speed.

Calculates motor efficiency as output power divided by input power.

Calculates DC electrical power from voltage and current.

Calculates back EMF from supply voltage, armature current and armature resistance; with a back-EMF constant it also gives angular speed.

Calculates approximate three-phase motor current from power, voltage, power factor, and efficiency.

Calculates motor synchronous speed from frequency and pole count.