General Studies · Fluid Machinery
Overload operation reduces reaction turbine efficiency primarily due to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1a sharp reduction in runner speed during overload
- 2failure of the draft tube to operate during overload conditions
- 3the turbine suddenly behaving like an impulse turbine under high discharge
- 4highly non-uniform and turbulent flow through the runner passages✓
Correct answer
highly non-uniform and turbulent flow through the runner passages
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