Question 673Steam Plants - Assistant Engineer70% to pass
The labyrinth packing ring in an interstage diaphragm of an impulse turbine is prevented from rotating by _______________.
AI Explanation
The correct answer is B) a horizontal key joint extending into a slot.
The labyrinth packing ring in an interstage diaphragm of an impulse turbine is prevented from rotating by a horizontal key joint that extends into a slot. This key joint locks the packing ring in place and prevents it from rotating, ensuring the proper sealing and functioning of the turbine. The other answer choices, such as spring tension, steam pressure, or the weight of the diaphragm, do not directly prevent the rotation of the packing ring in this specific component of the turbine.
Related Questions
#671 Large temperature and pressure drops which occur in the first stage of a combination impulse and reaction turbine are caused by steam passing through _______________.#672 Which of the following statements represents the function the nozzle assembly performs in an impulse turbine? #674 Steam passing through a multi-stage impulse turbine does not impart any appreciable axial thrust to the rotor. This is primarily due to the _______________.#675 In an impulse turbine, the fixed blades function to _______________.#676 The purpose of shroud bands secured to the tips of the turbine blades is to _______________.