Question

The time required for the output of a transducer to rise to 63.2% of its final value as a result of a step change in the measurand is called?

(a) zero drift

(b) threshold

(c) time constant

(d) none of the mentioned

This question was posed to me in an international level competition.

This intriguing question originated from Measurement of Pressure in chapter Engine Electronics of IC Engine

Answer 1

Answer: (c) time constant

Explanation: The time constant is the time required for the output of a transducer to rise to 63.2% of its final value in response to a step change in the measurand. It is a key characteristic of first-order systems and describes how quickly the system responds to changes in input. The smaller the time constant, the faster the system reaches its final value.