Question

How can Type-A uncertainties can be quantify?

(a) Using quality transducer

(b) Using stepper motor

(c) Using LCR meter

(d) Using conductivity meter

The question was asked during an internship interview.

This intriguing question comes from Type A Evaluation of Uncertainty topic in portion Evaluating Uncertainty in Measurement of Engineering Metrology

Answer 1

Right option is (a) Using quality transducer

Easiest explanation: Better quality transducer can be used to reduce Type-A and Type-B elemental uncertainties. Calibration can quantify Type-A elemental uncertainty, but not reduce it. Calibration can quantify as well as reduce the level of Type-B elemental uncertainty.