Which outcome occurs when refrigerant R-134a leaks into a refrigeration system using alkylbenzene lubricating oil?

💡 Explanation

When R-134a leaks into alkylbenzene oil, refrigerant dilution occurs because R-134a is miscible, causing a significant reduction of the oil viscosity. Therefore excessive wear results due to compromised lubrication, rather than motor short, pressure increase or temperature rise which require different mechanisms like chemical reactions or fouling.

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• Which increased risk results from hydrogen-induced cracking during post-tensioning?
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• Which outcome occurs when significant harmonic currents flow through a power distribution circuit containing a capacitor bank?