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← ScienceWhich failure mode arises when a refrigeration cycle exceeds its designed compression ratio?
A)Compressor overheating and oil breakdown✓
B)Evaporator coil ice formation
C)Refrigerant phase separation occurs
D)Expansion valve pressure lockup
💡 Explanation
Excessive compression initiates oil breakdown resulting from extremely high heat, due to adiabatic compression. Lubrication fails therefore compressor bearings overheat, rather than abnormal issues in the evaporator or expansion system at lower temps.
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