A reaction type hydro-electric plant use a 95% efficiency generator to produce its rated output of 20MW. It was observed during its operation that the mechanical loss is 2.5MW. Also from the penstock down to the turbine, 20% hydraulic head loss and 15% leakage loss occur which are equally distributed and based on the parameters at the dam. The average elevation from the headrace to the turbine is 30 m and from the tailrace to the turbine is 5 m. Compute the ff: a.    Power by the turbine, kW  b.    Volume flow rate at the source, m3/s c.    Power by the jet, kW d.    Mechanical Efficiency, %

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A reaction type hydro-electric plant use a 95% efficiency generator to produce its rated output of 20MW. It was observed during its operation that the mechanical loss is 2.5MW. Also from the penstock down to the turbine, 20% hydraulic head loss and 15% leakage loss occur which are equally distributed and based on the parameters at the dam. The average elevation from the headrace to the turbine is 30 m and from the tailrace to the turbine is 5 m. Compute the ff:

a.    Power by the turbine, kW 

b.    Volume flow rate at the source, m3/s

c.    Power by the jet, kW

d.    Mechanical Efficiency, %

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