Question 564Steam Plants - Assistant Engineer70% to pass
A pressure-velocity compounded impulse turbine consists of _______________.
AI Explanation
The correct answer is D) two or more stages of velocity compounding.
A pressure-velocity compounded impulse turbine consists of two or more stages of velocity compounding, where the steam is expanded through a series of nozzles and blades. This allows the steam to undergo both velocity compounding and pressure compounding, making it more efficient than a simple impulse turbine.
The other options are incorrect because: A) a pressure-velocity compounded turbine does not have diaphragms, B) it involves both velocity compounding and pressure compounding, not just velocity compounding with reaction pressure compounding, and C) it has multiple stages of nozzles, not just a single row with no pressure drop.
Related Questions
#561 The type of turbine shown in the illustration is classified as a Illustration SE-0003 #563 Design characteristics of a velocity-compounded impulse turbine include the utilization of _______________.#565 When starting a turbo-generator, you must provide lube oil pressure to the governor power piston by means of _______________.#566 Which of the listed parts illustrated in the turbo-generator governing system, provides the follow-up to prevent the nozzle valves from cycling between the fully open and fully closed positions, with each variation in turbine speed? Illustration SE-0009 #567 If two turbo-generators with the same no-load speed settings are operating in parallel, the unit whose governor has the lesser speed droop will _______________.