1 Answers
Option 3 : Speed of response
Speed of response is dynamic characteristics of measurement system.
Dynamic characteristics of the instrument include:
1. Dynamic error
2. Fidelity
3. Speed of response
4. Lag
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Dynamic error:
The difference between the true value of the measured quantity to the value shown by the measuring instrument under varying conditions.
Speed of Response:
It is defined as the rapidity of the measurement system that responds to the changes in the measuring variable.
It indicates how active and fast the system is.
Fidelity:
It is defined as the degree to which a measuring instrument is capable of faithfully reproducing the changes in input, without any dynamic error.
Lag:
1) Every system takes at least some time to respond, whatever time it may be to the changes in the measured variable.
2) From these definitions, we can conclude that the speed of response and Fidelity are the characteristics that lead to variations while measuring.