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In reaction turbines, the draft tube is used
  • a)
    for the safety of the turbine
  • b)
    to convert the kinetic energy of flow by a gradual expansion of the flow cross-section
  • c)
    to destroy the undesirable eddies
  • d)
    for none of the above purposes
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In reaction turbines, the draft tube is useda)for the safety of the t...
The draft tube has two purposes as follows
1. It permits a negative or suction head to be established at the runner exist, thus making it possible to install the turbine above the tail race level without loss of head.
2. It converts a large proportion of velocity energy rejected from the runner into useful pressure energy. i.e. acts as a recuperator of pressure energy.
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In reaction turbines, the draft tube is useda)for the safety of the turbineb)to convert the kinetic energy of flow by a gradual expansion of the flow cross-sectionc)to destroy the undesirable eddiesd)for none of the above purposesCorrect answer is option 'B'. Can you explain this answer?
Question Description
In reaction turbines, the draft tube is useda)for the safety of the turbineb)to convert the kinetic energy of flow by a gradual expansion of the flow cross-sectionc)to destroy the undesirable eddiesd)for none of the above purposesCorrect answer is option 'B'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about In reaction turbines, the draft tube is useda)for the safety of the turbineb)to convert the kinetic energy of flow by a gradual expansion of the flow cross-sectionc)to destroy the undesirable eddiesd)for none of the above purposesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In reaction turbines, the draft tube is useda)for the safety of the turbineb)to convert the kinetic energy of flow by a gradual expansion of the flow cross-sectionc)to destroy the undesirable eddiesd)for none of the above purposesCorrect answer is option 'B'. Can you explain this answer?.
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