What is the purpose of the method of drying out steam?

• A. So condensate does not build up; liquid will ruin turbine
• B. To raise the steam pressure
• C. To cool the steam without phase change
• D. To increase moisture content

Answer: (A)

Drying out steam is about removing the liquid water content so the steam entering the turbine is as dry as possible. When condensate or water droplets travel with the steam, they can strike and erode turbine blades, cause damage, and reduce efficiency. By stripping out condensate and droplets, the turbine experiences smoother operation and longer life, with better energy transfer from steam to the blades. This process is not intended to raise pressure, cool the steam without a phase change, or increase moisture content; those outcomes would defeat the purpose of keeping the steam dry.