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← TechnologyWhich consequence results when hydraulic system viscosity increases and a proportional valve orifice size remains static?
A)Decreased actuator speed✓
B)Increased valve hunting
C)Reduced system efficiency
D)Elevated component temperature
💡 Explanation
Decreased actuator speed occurs because increased viscosity raises fluid resistance within the valve, invoking the Hagen–Poiseuille equation and reduces flow rate reaching the actuator. Therefore, the actuator slows down, rather than speeding up as would happen with lower viscosity.
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