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Computers & TechnologyComputers & Technology
3 December, 09:17

Technician A says that PTC heaters can be built into a conventional heater core assembly. Technician B says that a PTC heater's electrical resistance will decrease as its temperature increases. Which technician is correct? A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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  1. 3 December, 10:43
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    A) Technician A only.

    Explanation:

    Only Technician A who said that Positive Temperature Coefficient (PTC) heaters can be built into a conventional heater core assembly is correct because they use the same heat loss and transfer system. This is easily verifiable with a simulation.

    Technician B, who said that a PTC heater's electrical resistance will decrease as its temperature increases is incorrect because the resistance of a conductor is directly proportional to temperature. This means that a PTC heater's electrical resistance will increase as its temperature increases.
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