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← TechnologyWhich pressure overshoot arises when switching hydraulic actuators aided by an accumulator during heavy lifting?
A)Fluid inertia hammer✓
B)Valve spool constriction
C)Accumulator spring resonance
D)Thermal expansion imbalance
💡 Explanation
The pressure overshoot is due to fluid inertia hammer, as the rapid redirection of high-pressure fluid from the accumulator causes a surge. This occurs because the sudden stop generates pressure waves with substantial amplitude rather than gradual pressure stabilization, resulting in overshoot.
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