USCG USCG Steam
Set 13 • Question #133 of 496
Launch Interactive Practice Room In an impulse turbine, the fixed blades function to __________.
A
decrease steam velocity
B
change the direction of steam flow
✓ Correct Answer
C
equalize pressure differences
D
prevent steam turbulence
USCG NMC Regulatory Explanation
In an impulse turbine stage (Curtis / Rateau), steam pressure drops exclusively across stationary nozzles, converting pressure into high-velocity kinetic jets that drive the moving blades without pressure drop across the blades.
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