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1. |
At the eye tip of a centrifugal impeller, blade velocity is 200 m/s while the uniform axial velocity at the inlet is 150 m/s. If the sonic velocity is 300 m/s, then the inlet Mach number of flow will be |
A. | 0.75 |
B. | 0.66 |
C. | 0.9 |
D. | 0.83 |
Answer» E. | |