GD&T Position Tolerancing Calculations 2

Question 1

A hole has a position tolerance of ⌀0.4 at MMC. The actual hole diameter is 10.3 mm and MMC is 10.0 mm. What is the total allowable position tolerance?

Accepted Answer

⌀0.7

Answer

⌀0.4

Answer

⌀0.3

Answer

⌀1.0

Question 2

For a pattern of four holes, the True Position is defined by basic dimensions from datum A (primary), B (secondary), and C (tertiary). Which datum controls orientation of the pattern?

Accepted Answer

Datum A

Answer

Datum B

Answer

Datum C

Answer

All three equally

Question 3

A shaft pin has a position tolerance of ⌀0.5 at LMC. The actual pin diameter is 12.0 mm and LMC is 12.3 mm. What bonus tolerance is available?

Accepted Answer

⌀0.3

Answer

⌀0.0

Answer

⌀0.8

Answer

⌀0.2

Question 4

The formula for converting a Cartesian position deviation (Δx, Δy) to a diametral position error is:

Accepted Answer

2√(Δx² + Δy²)

Answer

Δx + Δy

Answer

√(Δx² + Δy²)

Answer

(Δx² + Δy²)

Question 5

A hole center is measured at X = 25.08 mm and Y = 15.06 mm. Basic dimensions are X = 25.00 and Y = 15.00. What is the diametral position error?

Accepted Answer

⌀0.10

Answer

⌀0.14

Answer

⌀0.20

Answer

⌀0.28

Question 6

When RFS (Regardless of Feature Size) is applied to a position tolerance, bonus tolerance is:

Accepted Answer

Not applicable — no bonus is allowed

Answer

Equal to the size tolerance

Answer

Half the size tolerance

Answer

Added automatically by the inspector

Question 7

A composite position callout has an upper segment of ⌀0.8 and a lower segment of ⌀0.2. What does the lower segment control?

Accepted Answer

Feature-to-feature spacing within the pattern

Answer

Location of the pattern from the datums

Answer

Orientation only, not location

Answer

Profile of the hole surface