A generator is

A generator is

• A. A machine that stores mechanical energy.
• B. A device that converts electricity into motion.
• C. A machine capable of turning one form of energy into electrical energy.
• D. A system that controls the flow of coolant.

Answer: (C)

A generator converts mechanical energy into electrical energy. It usually uses a prime mover—like a turbine or engine—to spin coils or magnets inside a magnetic field, and this motion induces an electric current through electromagnetic induction. The essential idea is energy transformation: mechanical energy from the rotating part becomes electrical energy delivered to a circuit or system. That’s why this description fits best. The option about storing mechanical energy isn’t what a generator does (that would be a storage device like a flywheel). The option about converting electricity into motion describes a motor, not a generator. The option about controlling coolant flow relates to cooling systems, not energy conversion.

A generator converts mechanical energy into electrical energy. It usually uses a prime mover—like a turbine or engine—to spin coils or magnets inside a magnetic field, and this motion induces an electric current through electromagnetic induction. The essential idea is energy transformation: mechanical energy from the rotating part becomes electrical energy delivered to a circuit or system.

That’s why this description fits best. The option about storing mechanical energy isn’t what a generator does (that would be a storage device like a flywheel). The option about converting electricity into motion describes a motor, not a generator. The option about controlling coolant flow relates to cooling systems, not energy conversion.