What is the main distinction between sheet metal and plate in terms of thickness?

• Plates are thicker than 6mm, and sheets are less than 6mm

• Plates are less than 6mm, and sheets are thicker than 6mm

• Plates are thinner than sheets

• Plates are measured in meters, and sheets are measured in millimeters

What is the primary purpose of shearing in sheet metal processes?

• To bend the sheet metal

• To weld two sheets together

• To remove a blank of suitable dimensions

• To heat-treat the sheet metal

In shearing, as the clearance between the punch and die increases, what is the effect on punch force?

• Punch force increases

• Punch force decreases

• Punch force remains constant

• Punch force fluctuates

Which operation involves punching holes in a sheet without removing any material?

• Perforating

• Parting

• Notching

• Lancing

What type of die allows several operations to be performed in one stroke at a single station?

• Progressive die

• Transfer die

• Compound die

• Segmented die

What is the purpose of beading in sheet metal processes?

• To reduce material thickness

• To improve the appearance and stiffness of the part

• To remove burrs from the edges

• To punch holes in the sheet

In stretch forming, how is the sheet metal positioned during the process?

• It is held at the center and stretched radially

• It is clamped along the edges and stretched over a male die

• It is heated and compressed into a mold

• It is rolled into a cylindrical shape

Which process involves folding the edge of a sheet over itself?

• Flanging

• Hemming

• Beading

• Bulging

What is the advantage of using polyurethane plugs in the bulging process?

• They increase punch force

• They are resistant to abrasion and wear

• They require lubrication for smooth operation

• They reduce springback in bending

In the manufacturing of metal honeycomb structures, what is the primary function of the corrugation process?

• To cut the sheet into desired lengths

• To apply adhesive to node lines

• To pass the sheet through rolls to create corrugations

• To bond the corrugated sheet to outer skins