Which machine converts mechanical energy into electrical energy?

Which machine converts mechanical energy into electrical energy?

• A. Electric Motor
• B. Electric Generator
• C. Transformer
• D. Capacitor

Answer: (B)

Converting mechanical energy into electrical energy is the job of a generator. It works by rotating coils inside a magnetic field (or rotating a magnet inside coils), which changes the magnetic flux through the coils. This changing flux induces an electric current in the coils, turning mechanical energy supplied by a turbine, engine, or other mover into electrical energy. An electric motor does the reverse—uses electrical energy to produce motion. A transformer changes voltage and current levels without converting energy form, and a capacitor stores electrical energy rather than converting mechanical energy.

Converting mechanical energy into electrical energy is the job of a generator. It works by rotating coils inside a magnetic field (or rotating a magnet inside coils), which changes the magnetic flux through the coils. This changing flux induces an electric current in the coils, turning mechanical energy supplied by a turbine, engine, or other mover into electrical energy.

An electric motor does the reverse—uses electrical energy to produce motion. A transformer changes voltage and current levels without converting energy form, and a capacitor stores electrical energy rather than converting mechanical energy.