CH 22: Inspection Technologies

What is the procedure called in which an unknown quantity is compared to a known standard using a consistent system of units?

• Calibration

• Measurement

• Evaluation

• Estimation

Which basic quantity in metrology is concerned with the flow of electric charge?

• Temperature

• Mass

• Electric current

• Luminous intensity

From what are other physical quantities derived in metrology?

• Basic quantities

• Complex equations

• Random variables

• Hypothetical models

Which basic quantity in metrology is related to the amount of matter in an object?

• Length

• Mass

• Time

• Temperature

What does accuracy in measuring instruments refer to?

• The smallest variation of the variable that can be detected

• How closely the measured value agrees with the true value

• A measure of the repeatability of the measurement process

• How long the instrument takes to measure the variable

What does resolution refer to in measuring instruments?

• The smallest variation of the variable that can be detected

• How closely the measured value agrees with the true value

• A measure of the repeatability of the measurement process

• The speed of response of the instrument

Which of the following is NOT a characteristic of measuring instruments mentioned in the document?

• Accuracy

• Precision

• Color

• Resolution

Which characteristic of measuring instruments involves how closely the measured value agrees with the true value?

• Resolution

• Speed of response

• Accuracy

• Precision

What is NOT listed as a characteristic of measuring instruments in the document?

• Reliability

• Cost

• Color

• Operating range

In the context of measurement, what does low accuracy but high precision indicate?

• Measurements are close to the true value but spread out.

• Measurements are far from the true value but close to each other.

• Measurements are both close to the true value and each other.

• Measurements are far from the true value and spread out.