CDT CDT Geometric Dimensioning & Tolerancing

Question 1

Which GD&T symbol is used to control the straightness of a surface or axis?

Accepted Answer

Straightness

Answer

Straightness is the GD&T symbol that controls how straight a surface line element or axis must be.

Question 2

What does the Maximum Material Condition (MMC) modifier mean when applied to a feature of size?

Accepted Answer

The feature has the greatest amount of material within its tolerance

Answer

MMC refers to the condition where a feature of size contains the maximum amount of material permitted by its tolerance, such as the largest shaft or smallest hole.

Question 3

Which datum reference frame axis is typically the primary datum in a three-plane datum reference system?

Accepted Answer

The axis established by the largest flat surface

Answer

The primary datum is typically established by the largest flat surface because it provides the most stable three-point contact with the datum reference frame.

Question 4

A true position tolerance of ⌀0.010 at MMC means the positional tolerance zone is a:

Accepted Answer

Cylindrical zone of diameter 0.010

Answer

When a diameter symbol precedes the positional tolerance value, the tolerance zone is cylindrical with that diameter.

Question 5

Which GD&T control establishes both the form and the location of a feature simultaneously?

Accepted Answer

Profile of a Surface

Answer

Profile of a Surface is a composite control that can simultaneously control the form, orientation, and location of a surface.

(CDT) Certified Drafting Technician Practice Test

(CDT) Certified Drafting Technician Practice Test

CDT CDT Geometric Dimensioning & Tolerancing