Which device in a nuclear power plant is described as having rotating blades turned by a fluid?

• A. Turbines
• B. Generators
• C. Condensers
• D. Pumps

Answer: (A)

Rotating blades driven directly by a flowing fluid describe a turbine. In a nuclear plant, high-pressure steam from the reactor turns the blades on a turbine rotor. The fluid’s momentum and energy push the blades, causing the rotor to spin. That mechanical rotation is then used to drive the generator, converting the turbine’s rotational energy into electricity.

The other devices don’t fit this description: generators themselves produce electricity when driven by a turbine, but they don’t rely on fluid turning their own blades. Condensers are heat exchangers that condense steam back into water and have no rotating blades. Pumps move fluids using an impeller driven by a motor or turbine, not by the fluid turning blades to generate motion.