PPCE - Materials and Process

Which material has high strength-to-weight ratio and is often used in aerospace applications?

• Cast iron

• Aluminum alloy

• Copper

• Lead

What is the primary purpose of the material selection process in manufacturing?

• To reduce taxes

• To improve product aesthetics

• To select the cheapest available material

• To select the best performance, cost, and manufacturability

Which material selection criterion is directly related to the lifespan of the product?

• Cost

• Availability

• Durability

• Colour

In terms of process planning, why is machinability an important factor in material selection?

• It reduces color defects

• It improves product design

• It impacts tool life and production time

• It makes the product waterproof

Which of the following is a mechanical property of a material?

• Thermal conductivity

• Electrical resistivity

• Hardness

• Transparency

Which property defines the ability of a material to withstand repeated loading without failure?

• Creep resistance

• Elasticity

• Fatigue strength

• Plasticity

Which of the following best defines a composite material?

• A single-phase metal alloy

• A material made by combining two or more distinct materials to get improved properties

• A pure chemical element

• A material used only in electrical circuits

What is the main goal of process selection in manufacturing?

• To use the most expensive equipment

• To select the process that gives best quality at lowest cost

• To increase the number of machines

• To avoid automation

Which factor is NOT typically considered during process selection?

• Product design

• Material type

• Weather conditions

• Production volume

What is the first step in the process selection method?

• Choose primary processes

• Evaluate resources

• Analyze product design

• Determine production volume