Technician A says that some types of NOx sensor use a galvanic operating principle. Technician B says that galvanic type NOx sensors must be powered up using V-Ref. Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because some NOx sensors indeed use a galvanic operating principle, which involves a chemical reaction generating a voltage that can be measured to determine NOx levels. Technician B is incorrect because galvanic cells, by their nature, generate their own voltage and do not require an external power source like V-Ref to operate.

Technician a Says That Some Types of NOx Sensor Use