Electrical / Electronics
Synchronous speed
Calculates motor synchronous speed from frequency and pole count.
Related calculators
Motor slip
Calculates slip from synchronous speed and rotor speed.
Motor torque from power and speed
Calculates approximate torque from power in kW and rotational speed.
Motor power from torque and speed
Calculates approximate power from torque and rotational speed.
Motor slip percent
Helper calculation for percent slip from synchronous speed and rotor speed.
DC motor back EMF
Calculates back EMF from supply voltage, armature current and armature resistance; with a back-EMF constant it also gives angular speed.
DC motor starting current and torque
Calculates current and torque at zero back EMF in a simple armature model.