Steam turbines: definition of blading efficiency (diagram efficiency) The ratio of the work done on the blades to the energy supplied to the blades is called: Choose the correct option.
Mechanical Engineering
Steam Nozzles and Turbines
Difficulty: Easy
Choose an option
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ABlading efficiency
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BNozzle efficiency
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CGross or stage efficiency
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DMechanical efficiency
Answer
Correct Answer: Blading efficiency
Explanation
ConceptEnergy supplied to the blades (from the nozzle) appears mainly as kinetic energy of steam jets. The fraction of that energy actually converted into work on the rotor is the blading (diagram) efficiency.
Why others are wrongNozzle efficiency compares actual and isentropic jet velocities in the nozzle.Stage efficiency combines nozzle and blade effects.Mechanical efficiency accounts for mechanical losses between rotor and output shaft.
Final AnswerBlading efficiency