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← ScienceWhich risk increases when a refrigerator cycle's cooling efficiency degrades?
A)Overheating of compressor motor windings✓
B)Excessive refrigerant condensation in evaporator
C)Increased external convection heat transfer
D)Reduced cooling rate of capillary tube
💡 Explanation
Compressor run-time increases to maintain cold temperatures. Joule heating in windings increases because electrical energy converts to heat, therefore stator risk of overheat increases, rather than altered function of the expansion valve/ evaporator coil downstream.
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