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Which outcome occurs when oil viscosity increases in hydraulic actuators?

A)Actuator speed decreases significantly
B)Pump cavitation risk diminishes slightly
C)System pressure relief valve opens
D)Thermal expansion stresses decrease slowly

💡 Explanation

Increased oil viscosity elevates the fluid resistance; thus using increased energy for fluid flow enacting viscous drag, rather than directly moving the actuator arm because force transmission drops therefore reducing speed, rather than affecting pump cavitation or relief pressures.

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