CPT Measurement & Calibration 2

Question 1

A micrometer reads 0.752 inches but the actual dimension is 0.750 inches. This 0.002-inch error is best described as:

Accepted Answer

Systematic error

Answer

A consistent offset from the true value is a systematic error, often caused by instrument miscalibration or a zero offset.

Question 2

Which of the following best describes 'measurement traceability'?

Accepted Answer

An unbroken chain of comparisons linking measurements to national or international standards

Answer

Traceability means every measurement can be connected through an unbroken calibration chain to a recognized standard such as NIST.

Question 3

When calibrating a pressure gauge, the technician compares it against a deadweight tester. The deadweight tester is serving as the:

Accepted Answer

Reference standard

Answer

The deadweight tester provides a known, accurate pressure value against which the gauge being calibrated is compared, making it the reference standard.

Question 4

A dial indicator has a resolution of 0.001 inch. What does resolution mean in this context?

Accepted Answer

The smallest increment the instrument can display or detect

Answer

Resolution is the smallest change in the measured quantity that the instrument can distinguish and display.

Question 5

A Go/No-Go gage is used to check a shaft diameter. The shaft passes the Go end but fails the No-Go end. What does this result indicate?

Accepted Answer

The shaft is within specification

Answer

A part that passes (enters) the Go gage and does not pass (enter) the No-Go gage is within the specified tolerance range.

(CPT) Certified Production Technician Practice Test

(CPT) Certified Production Technician Practice Test

CPT Measurement & Calibration 2