The device that converts mechanical energy into electrical energy is

• A. Fracking equipment
• B. Nuclear reactor
• C. Turbine
• D. Generator

Answer: (D)

Converting mechanical energy into electrical energy is done by devices that use electromagnetic induction to produce current as they are turned. A generator fits this role: when it’s spun by a mechanical force—such as a turbine, engine, or wheel—it induces electricity in its coils. Upstream heat sources like a nuclear reactor or other equipment don’t directly generate electricity; they provide the energy to drive a turbine, and the actual electrical generation happens in the generator. A turbine provides the motion, but by itself it doesn’t convert energy to electricity.