Which outcome occurs when thermal runaway initiates in a transformer's oil-filled tank?

💡 Explanation

The pressure relief valve activates due to increased internal pressure from oil vaporization; the mechanism is gas expansion caused by overheating. This occurs because the fault current raises the oil’s temperature leading to vaporization, therefore, relieving pressure is crucial rather than insulation failure or condenser issues.

• During rapid deceleration in a modern gasoline direct injection (GDI) system, which outcome occurs due to wall wetting?
• Which consequence results when a hermetic compressor motor overheats due to refrigerant leak?
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• What outcome occurs when excessive cylinder head exhaust valve guide wear occurs?
• Which outcome from a stuck valve results when a hydraulic actuator extends fully?
• Which risk increases when advanced gasoline direct injection (GDI) engines experiences excessive piston crevice volume?