ASME ASME Geometric Dimensioning and Tolerancing

Question 1

Which ASME standard governs Geometric Dimensioning and Tolerancing (GD&T) in the United States?

Accepted Answer

ASME Y14.5

Answer

ASME Y14.2

Answer

ASME Y14.8

Answer

ASME B46.1

Question 2

In GD&T, what does the feature control frame symbol ⊕ represent?

Accepted Answer

Position

Answer

Straightness

Answer

Flatness

Answer

Circularity

Question 3

What is the purpose of a datum reference frame in ASME Y14.5 GD&T?

Accepted Answer

To establish a coordinate system from which measurements are made

Answer

To define material condition modifiers

Answer

To specify the surface finish of a part

Answer

To indicate the assembly sequence

Question 4

Under ASME Y14.5, what does the modifier ⓜ (circle M) mean when applied to a position tolerance?

Accepted Answer

Maximum Material Condition

Answer

Minimum Material Condition

Answer

Regardless of Feature Size

Answer

Projected Tolerance Zone

Question 5

Which GD&T characteristic controls the form of a surface to be within two parallel planes?

Accepted Answer

Flatness

Answer

Straightness

Answer

Parallelism

Answer

Perpendicularity

Question 6

In GD&T, 'Rule #1' (the Envelope Principle) states that:

Accepted Answer

A perfect-form envelope at MMC must not be violated

Answer

All tolerances are independent of feature size

Answer

Datum features must be flat and cylindrical

Answer

All GD&T requires datum references