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← TechnologyWhich risk increases when a high-speed proportional valve experiences excessive switching?
A)Hydraulic lock responsiveness degradation
B)Flow saturation precision loss
C)Thermal runaway amplifier failure✓
D)Contamination amplifies spool stiction
💡 Explanation
Repeated opening and closing of the proportional valve results in increased heat dissipation through Joule heating in the integral amplifier; this effect is further accelerated by the MOSFET's `on-state drain-source resistance`, because thermal runaway may occur, rather than hydraulic lock, etc. that have a lower dependency on high frequency
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