Which device is designed to prevent accidents by venting excess pressure in an oil-filled transformer?

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Multiple Choice

Which device is designed to prevent accidents by venting excess pressure in an oil-filled transformer?

Explanation:
When systems can build up dangerous pressure, a pressure-relief device is used to vent excess pressure and prevent failure. In oil-filled transformers, the oil heats and gases can form; a valve opens at a set pressure to release that buildup safely, avoiding tank rupture or explosion. The valve acts as the safety outlet that keeps the internal pressure within safe limits. A gauge only measures pressure and does not relieve it; a thermostat controls temperature but not the release of pressure; an indicator light only signals status and doesn’t vent anything. So the device designed to prevent accidents by venting excess pressure is the valve.

When systems can build up dangerous pressure, a pressure-relief device is used to vent excess pressure and prevent failure. In oil-filled transformers, the oil heats and gases can form; a valve opens at a set pressure to release that buildup safely, avoiding tank rupture or explosion. The valve acts as the safety outlet that keeps the internal pressure within safe limits. A gauge only measures pressure and does not relieve it; a thermostat controls temperature but not the release of pressure; an indicator light only signals status and doesn’t vent anything. So the device designed to prevent accidents by venting excess pressure is the valve.

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