CMS Manufacturing Processes & Techniques 2

Question 1

In electrical discharge machining (EDM), material removal occurs through which mechanism?

Accepted Answer

Controlled electrical sparks that erode the workpiece

Answer

EDM removes material through precisely controlled electrical sparks (discharges) that vaporize and erode the workpiece without direct contact.

Question 2

Which forming process uses a rotating mandrel and a roller tool to shape sheet metal into axisymmetric parts?

Accepted Answer

Spin forming (metal spinning)

Answer

Metal spinning (spin forming) rotates a metal blank against a mandrel while a roller tool progressively shapes it into a hollow, axisymmetric component.

Question 3

What is the primary purpose of a riser in a sand casting mold?

Accepted Answer

To feed molten metal and compensate for shrinkage during solidification

Answer

Risers are reservoirs of molten metal that feed the casting as it solidifies and shrinks, preventing shrinkage voids in the finished part.

Question 4

During a turning operation, increasing the depth of cut while keeping feed rate and cutting speed constant will primarily:

Accepted Answer

Increase material removal rate and cutting forces

Answer

Increasing depth of cut raises the volume of material removed per pass, which simultaneously increases cutting forces and tool loading.

Question 5

Which welding defect is characterized by a groove melted into the base metal along the weld toe that is not filled by weld metal?

Accepted Answer

Undercut

Answer

Undercut is a groove or channel burned into the base metal adjacent to the weld toe, reducing the effective cross-section and creating a stress concentration.

(CMS) Certified Manufacturing Specialist Practice Test

(CMS) Certified Manufacturing Specialist Practice Test

CMS Manufacturing Processes & Techniques 2