A Pelton wheel installation uses a water jet of 75 mm diameter to drive a wheel with the bucket on a diameter of 0,9 m. The deflection angle of the buckets is 160°. The relative velocity of the water is reduced by 12% while moving across the buckets. The rotational speed is 320 rev/min, the total pressure behind the nozzle 0,7 Mpa and velocity coefficient of the nozzle is 0,98. Determine: 2.1 the hydraulic power developed by the wheel 2.2 the turbine hydraulic efficiency. 2.2 the hydraulic efficiency of the wheel. 2.3 the overall efficiency of the turbine if the mechanical efficiency of the wheel is 96%.

A Pelton wheel installation uses a water jet of 75 mm diameter to drive a wheel with the bucket on a diameter of 0,9 m. The deflection angle of the buckets is 160°. The relative velocity of the water is reduced by 12% while moving across the buckets. The rotational speed is 320 rev/min, the total pressure behind the nozzle 0,7 Mpa and velocity coefficient of the nozzle is 0,98. Determine: 2.1 the hydraulic power developed by the wheel 2.2 the turbine hydraulic efficiency. 2.2 the hydraulic efficiency of the wheel. 2.3 the overall efficiency of the turbine if the mechanical efficiency of the wheel is 96%.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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