Question

High output steam turbines, which operate with high temperature and high-pressure steam, usually employ __________ to prevent the escape of steam along the shaft:

Select one:
a. carbon ring glands
b. labyrinth glands
c. oil glands
d. packing glands

Answer 1

High output steam turbines typically use labyrinth glands to prevent steam escape, minimizing leakage and frictional losses.

Step-by-step explanation:

High output steam turbines, which operate with high temperature and high-pressure steam, usually employ labyrinth glands to prevent the escape of steam along the shaft. Labyrinth glands are a series of complex passageways or "maze-like" seals where steam pressure drops across each stage and hence reduces leakages without requiring any contact with the shaft itself, which would cause wear and energy loss. This allows steam turbines, such as those used in nuclear power plants, to operate efficiently by minimizing steam leakage while preventing mechanical contact that could result in frictional losses and equipment damage.