Flashcards on Metrology and Precision Measurements
Click on the flashcard to see the answer
What is metrology?
Metrology is the science of measurement that involves the study of various measurement techniques and the accuracy of measurement instruments.
Why is precision important in measurements?
Precision ensures that measurements are consistent and reproducible, allowing for reliable data analysis and comparisons.
What are the SI units used in metrology?
The SI units commonly used in metrology include meters (length), kilograms (mass), seconds (time), and amperes (electric current).
What is the traceability of measurements?
Traceability refers to the ability to relate calibration results to national or international measurement standards through an unbroken chain of comparisons.
What is the role of precision measurement instruments?
Precision measurement instruments are used to obtain accurate and precise measurements in various fields such as manufacturing, research, and quality control.
What is the difference between accuracy and precision in measurements?
Accuracy refers to how close a measurement is to the true value, while precision refers to how close multiple measurements are to each other.
What is calibration?
Calibration is the process of checking and adjusting measurement instruments to ensure their accuracy and reliability.
Name a commonly used precision measurement instrument.
Vernier caliper
What is the purpose of measurement uncertainty?
Measurement uncertainty quantifies the range of possible values within which the true value of a measurement is estimated to lie.
What is the resolution of a measurement instrument?
Resolution refers to the smallest increment or division on a measurement instrument's scale that can be observed or read.
What is repeatability in measurements?
Repeatability refers to the ability of a measurement instrument to provide consistent results when measuring the same quantity multiple times.
What is the purpose of a calibration certificate?
A calibration certificate provides documented evidence that a measurement instrument has been calibrated and meets specified performance standards.
What is a micrometer used for?
A micrometer is used for measuring small distances or dimensions with high precision, typically in the range of 0.01 mm to 25 mm.
What is the role of uncertainty analysis in metrology?
Uncertainty analysis helps to estimate and express the uncertainties associated with measurement results, ensuring reliable interpretations and decisions.
What is the purpose of measurement standards?
Measurement standards provide a reference for calibrating measurement instruments and ensuring consistent and accurate measurements.