EMF equation of transformers

EMF equation of transformers lets you calculate the RMS values of induced voltages in the primary and secondary windings of a transformer. An alternating voltage, when applied to the primary…

Parts of a motor

An electric motor converts electrical energy to mechanical energy. In general, an electric motor consists of a stator, a rotor, winding, bearings, and casing. The motor rotates due to the…

Number of poles calculator

Most of the time, the motor nameplates do not contain the number of poles data on them. The number of poles in a motor can be calculated from its synchronous…

Synchronous speed calculator

The "synchronous speed" is the speed of the rotating magnetic field in an electric motor. Here is a simple synchronous speed calculator. Always remember that the synchronous speed and rated…

Motor torque calculator | Full load torque of a motor

The full load torque of a motor is the maximum torque that the motor can deliver when it is fully loaded. Here is a simple motor torque calculator that can…

Motor FLC calculator | Motor Full load current calculator

Motor FLC or full load current or full load amperes (FLA) of a motor is the maximum current the motor windings are designed to carry. Here is a simple motor…

Star-delta starter (Wye-Delta Starters) – Circuit, working

Induction motors are robust and reliable and are used in all industries across the globe. Various methods are followed to start induction motors, out of which star-delta starters are the…

Star-Delta starter design tool | Wye-Delta starter design tool

Star-delta starters are widely used for starting three-phase induction motors. It can reduce current inrush to 1/3 of direct-on-line starting current. Here is an advanced Star-Delta starter design tool that…

Direct-on-line starter | DOL starter selection tool

The direct-on-line starter is the cheapest motor starting method. In this method, full voltage is applied to the motor terminals. Here a comprehensive DOL starter selection tool, which can help…

Resistance calculator

Resistors are the basic building blocks of a circuit. They are used in circuits as voltage dividers, current limits, termination for communication links, etc. It is important to know how…