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← ScienceWhich inefficiency increases in a high-power steam turbine when rapid load changes cause water droplet formation?
A)Erosion rate quickly reduces
B)Isentropic efficiency plummets sharply✓
C)Condenser vacuum draw rises steadily
D)Turbine shaft endplay remains constant
💡 Explanation
Isentropic efficiency decreases because rapid condensation initiates boundary layer disruption which increases losses. Film condensation impairs momentum transfer between phases, therefore the efficiency plummets sharply rather than an increase in vacuum draw or shaft play because erosion reduces energy gradients eventually, not immedaitely.
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