Question

technician a says that mass airflow sensors determine mass airflow based on engine speed and manifold pressure. technician b says that some airflow sensors use a hot wire to determine mass airflow. who is correct?

a. technician a
b. technician b
c. both technician a and technician b
d. neither technician a nor technician b

Explanation:

Technician A is incorrect as mass - airflow sensors don't determine mass airflow based on engine speed and manifold pressure in that way. Technician B is correct as hot - wire air - flow sensors are a common type used to measure mass airflow.

Answer:

b. Technician B