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← TechnologyWhich outcome occurs when thermal strain exceeds valve clearance?
A)Valve spool seizes in bore✓
B)Reduced hydraulic system backpressure
C)Increased actuator displacement velocity
D)Elevated fluid cooling system efficiency
💡 Explanation
Valve spool seizure results from thermal expansion exceeding design clearances; this is a form of thermal lock. The **reduced area** increases friction because of the valve binds, therefore motion stops rather than the operation continuing under altered flow conditions.
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