Airstreams Gate 4 Practice Test 2026 - Free Practice Questions and Study Guide

Turning electrical energy into motion is what a motor does. When electricity flows through a motor’s windings, it generates a magnetic field. The interaction between this field and the magnets around the rotor creates torque, making the shaft turn and deliver mechanical energy to drive a load, like a fan or a drill.

A generator, by contrast, converts mechanical energy into electrical energy. A transformer adjusts voltage and current between circuits but doesn’t produce motion. A rectifier changes the type of electrical current (AC to DC or vice versa) without creating mechanical motion.