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Which outcome occurs when hydraulic fluid viscosity exceeds design limits?

A)Increased pump cavitation and component wear
B)Improved seal lubrication reducing energy loss
C)Reduced flow resistance at valves
D)Higher system thermal efficiencies achieved

💡 Explanation

Increased viscosity causes higher hydraulic resistance and pressure drops during **fluid friction**, particularly in tight clearances of vane pumps. This causes localized vacuum because the fluid cannot refill spaces quickly, therefore leading to destructive cavitation damage rather than optimal lubrication profiles.

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