Chapter 10 Industrial Materials Quiz 2

Which statement best describes the difference between inspection by attributes and inspection by variables?

Attributes provide go/no-go decisions; variables provide actual measured values

According to the Rule of 10, a measuring device should be:

Ten times more precise than tolerance

Whiche grade of gage block is primarlity used as a reference standard in calibration?

Grade 0.5

A process that repeatedly produces nearlt identical dimensions but consistently misses the target dimension is considered:

Precise but not accurate

Which ANSI fit class represents the tightest fot that can still be assembled by hand?

Class 4 Snug Fit

Standard measuring temperture for precision inspection is:

68F (20C)

Which istrument is specifically designed for highly accurate three-dimensional measurements?

Coordinate Measuring Machine (CMM)

Which inspection system is generally indpendent of ambient lighting conditions?

Laser Scanning System

(True or False) Standardization is important primarily because it reduces manufacturing costs and allows interchangeable parts

True

(True or False) The least material condition (LMC) represents a shaft at its largest permitted diameter

False

(True or False) Gage blocks are commonly calibrated using light-beam interferometry

True

(True or False) A no-go plug gage should freely enter a properly sized hole

False

(True or False) Laser scanning is a contact measurement method

False

The intentional difference between the diamensions of mating parts is called the…

Allowance

The ability of a measuring device to maintain calibration over time is known as… or …

Stability, drift

The smallest change detectable by a measuring instrument is its…

Resolution

In a normal distribustion, approximately ….% of all observations fall within +- 3 standard deviations

99.73