Millwright Certification Blueprint Reading 2

Question 1

On a mechanical drawing, what does a centerline (alternating long and short dashes) through a circular feature indicate?

Accepted Answer

The axis of symmetry for the feature

Answer

A cutting plane

Answer

A hidden edge

Answer

A break line

Question 2

What does the welding symbol designation 'E7018' tell a millwright about the electrode?

Accepted Answer

It has 70,000 PSI tensile strength, all-position, low-hydrogen

Answer

It is for TIG welding with 70 PSI gas

Answer

It is a 70mm diameter electrode for flat position only

Answer

It requires 18 volts for proper arc

Question 3

In GD&T, what does the position tolerance symbol (a crosshair within a circle) control?

Accepted Answer

The location of a feature relative to datum references

Answer

The surface finish of a feature

Answer

The roundness of a cylindrical surface

Answer

The straightness of an edge

Question 4

What information does a section view on a mechanical drawing provide that a standard view cannot?

Accepted Answer

Internal features and material thickness revealed by an imaginary cut

Answer

The weight of the part

Answer

The color of the materials used

Answer

Electrical wiring routing

Question 5

A dimension on a drawing reads '25.00 plus or minus 0.05'. What is the total tolerance range for this dimension?

Accepted Answer

0.10 mm

Answer

0.05 mm

Answer

25.05 mm

Answer

24.95 mm

Question 6

On an assembly drawing, what does a bill of materials (BOM) provide?

Accepted Answer

A list of all parts with quantities, part numbers, and descriptions

Answer

Step-by-step assembly instructions

Answer

The cost breakdown for the project

Answer

Maintenance schedules for the assembly