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A Kaplan turbine working under a head of 20 m develops 11800 kW. The outer diameter of the runner is 3.5 m and hub diameter 1.75 m. The guide blade angle at the extreme edge of the runner is 35°. The hydraulic and overall efficiencies of the turbine are 88% and 84% respectively. If the velocity of whirl is zero at outlet determine. (i) Runner inlet and outlet vane angles at the extreme edge of the runner and (ii) Speed of the turbine. 16:

A Kaplan turbine working under a head of 20 m develops 11800 kW. The outer diameter of the runner is 3.5 m and hub diameter 1.75 m. The guide blade angle at the extreme edge of the runner is 35°. The hydraulic and overall efficiencies of the turbine are 88% and 84% respectively. If the velocity of whirl is zero at outlet determine. (i) Runner inlet and outlet vane angles at the extreme edge of the runner and (ii) Speed of the turbine. 16:

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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A Kaplan turbine working under a head of 20 m develops 11800 kW. The outer diameter of the runner is 3.5 m and hub diameter 1.75 m. The guide blade angle at the extreme edge of the runner is 35°. The hydraulic and overall efficiencies of the turbine are 88% and 84% respectively. If the velocity of whirl is zero at outlet determine. (i) Runner inlet and outlet vane angles at the extreme edge of the runner and (ii) Speed of the turbine. 16:27
Transcribed Image Text:A Kaplan turbine working under a head of 20 m develops 11800 kW. The outer diameter of the runner is 3.5 m and hub diameter 1.75 m. The guide blade angle at the extreme edge of the runner is 35°. The hydraulic and overall efficiencies of the turbine are 88% and 84% respectively. If the velocity of whirl is zero at outlet determine. (i) Runner inlet and outlet vane angles at the extreme edge of the runner and (ii) Speed of the turbine. 16:27
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