Question:medium
Which of the following steam turbine is NOT compounded?
Which of the following steam turbine is NOT compounded?
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Remember: De Laval = Default. It is the "default" or simplest version with just One stage. Every other famous name on this list (Curtis, Rateau, Parson) is associated with a specific type of multi-stage "Compounding."
Updated On: Jul 1, 2026
- De Laval turbine
- Curtis turbine
- Rateau turbine
- Parson's turbine
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The Correct Option is A
Solution and Explanation
1. The De Laval Turbine: The
De Laval turbine is the simplest form of an impulse turbine. It is a
single-stage turbine consisting of one set of nozzles and one set of moving blades.
• High Velocity: Because the entire pressure drop occurs in a single set of nozzles, the steam exits at extremely high velocities (often supersonic).
• High Speed: To work efficiently, the rotor must spin at very high speeds (up to 30,000 RPM), which often requires a gearbox to reduce the speed for practical use.
2. Types of Compounded Turbines:
• Curtis Turbine: Utilizes
Velocity Compounding (two or more sets of moving blades with stationary blades in between).
• Rateau Turbine: Utilizes
Pressure Compounding (multiple sets of nozzles and moving blades).
• Parson's Turbine: A multi-stage
Reaction Turbine where pressure drop occurs in both fixed and moving blades.
De Laval turbine is the simplest form of an impulse turbine. It is a
single-stage turbine consisting of one set of nozzles and one set of moving blades.
• High Velocity: Because the entire pressure drop occurs in a single set of nozzles, the steam exits at extremely high velocities (often supersonic).
• High Speed: To work efficiently, the rotor must spin at very high speeds (up to 30,000 RPM), which often requires a gearbox to reduce the speed for practical use.
2. Types of Compounded Turbines:
• Curtis Turbine: Utilizes
Velocity Compounding (two or more sets of moving blades with stationary blades in between).
• Rateau Turbine: Utilizes
Pressure Compounding (multiple sets of nozzles and moving blades).
• Parson's Turbine: A multi-stage
Reaction Turbine where pressure drop occurs in both fixed and moving blades.
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