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← TechnologyWhich risk increases when fluid viscosity exceeds manufacturer’s limits in proportional hydraulic valves?
A)Spool valve response slowdown✓
B)Increased thermal expansion stress
C)Cavitation erosion reduction rate
D)Decreased resistance amplifier stability
💡 Explanation
Spool valve response slows, because increased viscosity raises the fluid resistance; therefore, desired valve movement is reduced rather than maintained. This creates lag, while options are unaffected directly since spool controls directional movement.
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