Answer :
Final answer:
Relief valves provide protection against over-pressurization in a hydraulic system by releasing fluid when the pressure exceeds a certain limit.
Explanation:
Protection against over-pressurization of the hydraulic system is provided primarily by Relief valves. Relief valves are designed to open and release fluid when the pressure within the system rises above a certain limit, hence avoiding system failure due to over-pressurization. Check valves, on the other hand, prevent fluid from flowing backward and do not provide any defense against over-pressurization. Redundant pumps can help maintain pressure in case of the failure of one pump, but they don't protect against over-pressurization. Lastly, a Hydraulic accumulator absorbs shocks and maintains the system pressure but fails to guard against over-pressurization.
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