At the point of operation with maximum efficiency, a turbine indicated unit power of 12 units and unit speed of 98 units and operates with 3300 kgf/s of flow, what are the speed in rpm and the specific speed of the machine respectively when its design head is 8.5 m?

At the point of operation with maximum efficiency, a turbine indicated

1.	At the point of operation with maximum efficiency, a turbine indicated unit power of 12 units and unit speed of 98 units and operates with 3300 kgf/s of flow, what are the speed in rpm and the specific speed of the machine respectively when its design head is 8.5 m?
A.	285 rpm and 339
B.	270 rpm and 360
C.	285 rpm and 360
D.	270 rpm and 339
Answer» B. 270 rpm and 360

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At the point of operation with maximum efficiency, a turbine indicated unit power of 12 units and unit speed of 98 units and operates with 3300 kgf/s of flow, what are the speed in rpm and the specific speed of the machine respectively when its design head is 8.5 m?

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