Question 596Steam Plants - Assistant Engineer70% to pass
What is used to compensate for the increased possibility of blade vibration occurring with impulse turbine blading?
AI Explanation
The correct answer is A) Securing the blade tips with shrouding.
Impulse turbine blading is more susceptible to vibration compared to reaction turbine blading. To compensate for this increased vibration risk, the blade tips are typically secured with shrouding. The shrouding helps stabilize the blades and reduces the likelihood of harmful vibrations occurring.
The other answer choices are incorrect because: B) the decreased pressure drop is not a vibration mitigation technique, C) seal stripping the casing does not address blade vibration, and D) tuned vibration dampers, while useful, are not the primary method for addressing vibration in impulse turbine blades.
Related Questions
#594 What happens to the steam as it moves across the moving blades in a reaction turbine? #595 In which type of turbine does a pressure drop exist through the fixed blades and the moving blades? #597 An energy loss associated with a reaction turbine, but not an impulse turbine, is _______________.#598 Which of the parts listed for a reaction turbine serve the same function as the nozzles of an impulse turbine? #599 The general method of reducing turbine reaction blade vibration is by the use of _______________.