Question

Linearity of transducer is ___________

(a) Closeness of the transducer’s calibration curve to a special curved line within a given percentage of full scale output

(b) Closeness of the transducer’s calibration curve to a special straight line within a given percentage of full scale output

(c) Closeness of the transducer’s calibration curve to a special straight line within a given percentage of half scale output

(d) Closeness of the transducer’s calibration curve to a special curved within a given percentage of half scale output

The question was asked during an interview.

This intriguing question originated from Classification of Transducers topic in portion Physiological Transducers of Biomedical Instrumentation

Answer 1

Correct option is (b) Closeness of the transducer’s calibration curve to a special straight line within a given percentage of full scale output

The best explanation: Linearity of transducer is closeness of the transducer’s calibration curve to a special straight line within a given percentage of full scale output. Basically, it reflects that the output is in some way proportional to the input. A linear sensor produces an output value which is directly proportional to the input.