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A turbine has a supply line of diameter 40 cm and a tapering draft tube as shown in Fig. 4.21. When the flow in the pipe is 0.5 m/s the pressure head at point A upstream of the turbine is 30 m and at point B in the draft tube, where the diameter is 60 cm, the pressure head is (-4 m). Point B is 2.0 m below point A. Estimate the power output of the turbine by assuming 90% efficiency.

A turbine has a supply line of diameter 40 cm and a tapering draft tube as shown in Fig. 4.21. When the flow in the pipe is 0.5 m/s the pressure head at point A upstream of the turbine is 30 m and at point B in the draft tube, where the diameter is 60 cm, the pressure head is (-4 m). Point B is 2.0 m below point A. Estimate the power output of the turbine by assuming 90% efficiency.

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 turbine has a supply line of diameter 40 cm and a tapering draft tube as shown in Fig. 4.21. When the flow in the pipe is 0.5 m/s the pressure head at point A upstream of the turbine is 30 m and at point B in the draft tube, where the diameter is 60 cm, the pressure head is (-4 m). Point B is 2.0 m below point A. Estimate the power output of the turbine by assuming 90% efficiency. 40 cm Dia A- Turbine 2.0 m 60 cm Dia Fig. 4.21
Transcribed Image Text:A turbine has a supply line of diameter 40 cm and a tapering draft tube as shown in Fig. 4.21. When the flow in the pipe is 0.5 m/s the pressure head at point A upstream of the turbine is 30 m and at point B in the draft tube, where the diameter is 60 cm, the pressure head is (-4 m). Point B is 2.0 m below point A. Estimate the power output of the turbine by assuming 90% efficiency. 40 cm Dia A- Turbine 2.0 m 60 cm Dia Fig. 4.21
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