GD&T GD&T Virtual Condition and Boundary Concepts

Question 1

What is virtual condition in GD&T?

Accepted Answer

The worst-case boundary generated by the collective effects of MMC size and the applicable geometric tolerance

Answer

The nominal drawing size of a feature

Answer

The maximum material condition of a feature without geometric tolerance

Answer

The average of all measured boundary positions

Question 2

For an external feature (pin) at MMC with a position tolerance, virtual condition equals:

Accepted Answer

MMC plus the geometric tolerance

Answer

MMC minus the geometric tolerance

Answer

LMC plus the geometric tolerance

Answer

LMC minus the geometric tolerance

Question 3

For an internal feature (hole) at MMC with a position tolerance, virtual condition equals:

Accepted Answer

MMC minus the geometric tolerance

Answer

MMC plus the geometric tolerance

Answer

LMC minus the geometric tolerance

Answer

LMC plus the geometric tolerance

Question 4

A pin has an MMC of 10.2 mm and a perpendicularity tolerance of 0.1 mm at MMC. What is its virtual condition?

Accepted Answer

10.3 mm

Answer

10.1 mm

Answer

10.2 mm

Answer

10.0 mm

Question 5

A functional (go) gauge designed to check a pin is sized to which boundary?

Accepted Answer

Virtual condition

Answer

Resultant condition

Answer

LMC size

Answer

Nominal drawing size

Question 6

Virtual condition applies specifically when which modifier is called out in the feature control frame?

Accepted Answer

MMC (Maximum Material Condition)

Answer

RFS (Regardless of Feature Size)

Answer

LMC (Least Material Condition)

Answer

Free State