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← ScienceWhich outcome occurs when a liquid-cooled electrical transformer experiences rapid depressurization?
A)Coolant boils due to lower boiling point✓
B)Increased core saturation lowers impedance
C)Winding flashover from reduced insulation strength
D)Harmonic resonance due to stray capacitance
💡 Explanation
The coolant will boil due to the suddenly decreased pressure through the mechanism of vaporisation induced by reduced total pressure. This causes a rapid phase transition, because the boiling occurs when vapour becomes easily favourable, rather than increased temperature.
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