Question 366Electricity & Electronics - QMED

The correct answer is D) its reliability factor will decrease. When a carbon resistor operates in electrical equipment that is not properly cooled, the excessive heat generated will cause the resistor's value to drift from its original specification. This drift in resistance value can lead to decreased reliability and potential failure of the electrical equipment. The excessive heat damages the resistor's internal structure, reducing its ability to maintain a stable resistance value over time. Therefore, the reliability factor of the carbon resistor will decrease when it is not properly cooled in the electrical equipment. The other options are incorrect because: A) The resistor's value will change, but not inversely proportional to the amount of heat generated. B) The reliability factor will decrease, not increase, due to the heat-related damage. C) The resistor's value will not remain the same, as it will drift due to the excessive heat.