IBEW Electrical Practice Test 2025 – Complete Exam Preparation

The device that converts electrical energy into mechanical energy is the electric motor. An electric motor operates based on the principles of electromagnetism, which involves the interaction between electric currents and magnetic fields. When an electric current flows through coils of wire within the motor, it generates a magnetic field that interacts with permanent magnets or other magnetic fields within the motor. This interaction creates forces that cause the rotor (the part of the motor that moves) to turn, thereby converting the electrical energy supplied into mechanical energy.

In contrast, a generator converts mechanical energy into electrical energy, making it unsuitable for this question. A transformer is designed to change the voltage level of an alternating current (AC) supply and does not perform energy conversion in a mechanical sense. A relay is an electromechanical switch that uses electrical energy to control the opening and closing of contacts but does not convert electrical energy into mechanical energy for motion or work. Therefore, the electric motor is the correct answer as it specifically fulfills the role of transforming electrical energy into mechanical energy.