A rate of rise heat detector should go off if it detects a ____ degree rise in temperature within one minute.

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Multiple Choice

A rate of rise heat detector should go off if it detects a ____ degree rise in temperature within one minute.

Explanation:
Rate-of-rise detectors trigger on how fast the temperature climbs, not on a fixed temperature. They are set to alarm when the temperature increases about 15 degrees Fahrenheit in one minute. That rapid rise is a reliable sign of a developing fire, so the detector responds promptly. If the rise is only a few degrees, normal room variations could cause false alarms; waiting for a much larger rise could delay detection in a real fire. So 15 °F per minute provides timely warning while avoiding unnecessary alarms.

Rate-of-rise detectors trigger on how fast the temperature climbs, not on a fixed temperature. They are set to alarm when the temperature increases about 15 degrees Fahrenheit in one minute. That rapid rise is a reliable sign of a developing fire, so the detector responds promptly. If the rise is only a few degrees, normal room variations could cause false alarms; waiting for a much larger rise could delay detection in a real fire. So 15 °F per minute provides timely warning while avoiding unnecessary alarms.

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