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Which risk significantly increases when a refrigeration system's operating cycle becomes prolonged?

A)Compressor motor winding overheating occurs
B)Refrigerant subcooling becomes significantly reduced
C)Evaporator coil frosting decreases system efficiency
D)Condenser fan motor cavitation risk decreases

💡 Explanation

Prolonged compressor operation causes overheating because the winding insulation breaks down during excessive ELECTRICAL RESISTANCE, triggering a short circuit. Therefore, motor overheating increases, rather than other refrigeration issues, because cooling is insufficient when the cycle stretches.

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