Which of the following correctly describes a non-condensing steam plant?

• A. Exhausts steam to the atmosphere
• B. Condenses all steam internally
• C. Operates at zero pressure
• D. Requires no cooling water

Answer: (A)

In a non-condensing steam plant, the steam that exits the turbine is not condensed back into liquid; instead it is discharged to the atmosphere. This means there is no condenser to recover latent heat, and the exhaust pressure is kept near atmospheric. That simple feature—dumping the exhaust to the atmosphere without condensing it—defines a non-condensing plant.

So the statement that describes this correctly is that the plant exhausts steam to the atmosphere. The other ideas describe a condensing setup (condensing all steam internally), or an unrealistic zero-pressure condition, or an assertion about cooling water that isn’t inherently true for all non-condensing configurations.