Question

What is the disadvantage of the piezoelectric pressure sensor?

(a) It has too much sensitivity

(b) It can measure only low pressure

(c) It is not suitable for dynamic measurement

(d) It can only give pressure difference

I got this question by my school teacher while I was bunking the class.

This intriguing question originated from Engine Electronics in division Automotive Electronics, Engine Performance Parameter & Testing of Automobile Engines of Automobile Engineering

Answer 1

The disadvantage of a piezoelectric pressure sensor is that it is not suitable for dynamic measurement in certain contexts.

Piezoelectric sensors work by generating an electrical charge in response to pressure changes. While they are highly sensitive and can measure rapid changes in pressure, they tend to be less effective in measuring static pressure or very slow variations in pressure. This is because their output is a charge that decays over time, which makes them less ideal for measuring constant or slowly varying pressures.

Therefore, the correct answer is:

(c) It is not suitable for dynamic measurement