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1. |
In axial flow pumps and compressors, the combined velocity diagram with common base is used to determine change in |
A. | absolute velocity (V2 – V1) |
B. | relative velocity (Vr2 – Vr1) |
C. | tangential velocity (U2 – U1) |
D. | whirl velocity (Vu2 – Vu1) |
Answer» E. | |