Question

Which among the following is not a dynamic characteristic?

• A. Precision
• B. Measuring lag
• C. Dynamic error
• D. Fidelity

Hint:

Instrument Characteristics. Static characteristics (Accuracy, Precision, Sensitivity, Linearity, etc.) describe performance for steady inputs. Dynamic characteristics (Speed of Response, Lag, Fidelity, Dynamic Error) describe performance for time-varying inputs.

Answer 1

The Correct Option is A

Instrument characteristics are broadly classified into static and dynamic characteristics
- Static characteristics describe the performance of an instrument when measuring a constant or slowly varying quantity
Examples include accuracy, precision, sensitivity, linearity, resolution, threshold, drift, hysteresis, and dead zone
- Dynamic characteristics describe the performance of an instrument when measuring a quantity that changes rapidly with time
Examples include speed of response, measuring lag (response time, time constant), fidelity (how well the output follows the input change), and dynamic error (the difference between the indicated value and the true value during change)
Among the given options: - Measuring lag, Dynamic error, and Fidelity are all dynamic characteristics describing the instrument's behavior with time-varying inputs
- Precision refers to the degree of reproducibility or agreement among repeated measurements of the same quantity under the same conditions
It is a static characteristic
Therefore, precision is not a dynamic characteristic