Physics · Fluid Mechanics

Which of the following statements is INCORRECT regarding the function of a draft tube in a hydraulic turbine?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Without it, the kinetic energy rejected at the runner outlet would go to waste.
2It increases the effective working head on the turbine.
3It permits the installation of the turbine above the tailrace level.
4It completely prevents cavitation under all operating conditions.✓

Correct answer

It completely prevents cavitation under all operating conditions.

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