General Studies · Theory of Machines
The critical speed of a turbine shaft is defined as the rotational speed at which:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The shaft's natural vibration frequency matches its rotational frequency✓
- 2It equals the synchronous speed of the connected generator
- 3The shaft will immediately fail due to mechanical overstress
- 4It is equal to the runaway speed of the turbine
Correct answer
The shaft's natural vibration frequency matches its rotational frequency
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