Discussion
Match each coefficient or term in List I with its meaning in List II.
List I
A. Degree of reaction
B. Stage loading coefficient
C. Flow coefficient
D. Free vortex design
List II
1. Rotor static enthalpy drop over stage static drop
2. Specific work over blade speed squared
3. Axial velocity over blade speed
4. Work held uniform along the span with reaction rising outward
Select the correct match.
Answer: A
The first three describe the stage at a single radius, while the fourth describes how the design varies along the span. Together they account for both the aerodynamic character of the stage and the pronounced twist of its blades.
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