Question

What is the use of the hot-wire sensor?

(a) To measure temperature

(b) To measure the smoke intensity

(c) To measure the mass flow rate

(d) To measure pressure

This question was posed to me during an interview for a job.

My question is from Engine Electronics in portion Automotive Electronics, Engine Performance Parameter & Testing of Automobile Engines of Automobile Engineering

Answer 1

The correct choice is (c) To measure the mass flow rate

Easiest explanation: The hot-wire sensor is used to measure the mass flow rate. This sensor is positioned between the air filter and the throttle valve.