What happens to the steam as it moves across...

Question 1 / 270705eccefa0bacbc34ba4d470ca

Question 1 of 270705eccefa0bacbc34ba4d470ca

What happens to the steam as it moves across the moving blades in a reaction turbine?

Question 1 of 27070

What happens to the steam as it moves across the moving blades in a reaction turbine?

🔍 Key Concepts

• Difference between impulse and reaction turbines • What happens to steam velocity and pressure in moving blades of a reaction turbine • How axial thrust is produced and in which direction it usually acts

💭 Think About

• In a pure reaction stage, is the pressure drop mainly in the fixed nozzles, in the moving blades, or in both? How does that affect velocity across the moving blades? • Think about whether reaction blades act more like nozzles or like simple turning vanes. If they act like nozzles, does the steam speed up or slow down as it passes through? • Consider which answer choices talk about thrust direction versus velocity/pressure change. Is this question asking about force direction or thermodynamic behavior in the blades?

✅ Before You Answer

• Identify whether a reaction turbine moving blade is a convergent passage (like a nozzle) or a constant-area passage. • Decide if pressure across the moving blades is closer to constant or dropping in a reaction stage. • Check if the main focus of the question is on velocity/pressure change or on axial thrust direction and eliminate options that don’t match that focus.

Question 1 of 27070

What happens to the steam as it moves across the moving blades in a reaction turbine?

It loses velocity at constant pressure.

It creates an axial thrust in the direction of the steam flow.

It creates an axial thrust opposing the direction of steam flow.

It gains velocity at constant pressure.

Question 1 / 270705eccefa0bacbc34ba4d470ca

Question 1 of 270705eccefa0bacbc34ba4d470ca

What happens to the steam as it moves across the moving blades in a reaction turbine?

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Question 1 of 27070

What happens to the steam as it moves across the moving blades in a reaction turbine?