Construction Material

Choose the correct definition for Metal and Alloy

• Metal is steel and Alloy is Zirconium

• Metal is man made and Alloy is nature

• Metal is pure substance and Alloy has 2 or more mixed of metal

• Metal does not react with air/water and Alloy react to air/water easily

Iron is one of the example for metal. What is the Atomic number for Iron (FE)?

• 29

• 26

• 14

• 75

Metalworking is a process of shaping and reshaping of metals to create useful object. Select the correct metalworking process. (Multiple correct answer)

• Sand casting

• Die casting

• Cutter casting

• Permanent mold casting

In metal joining, which of the following answers accurately describes the procedure?

It involves melting the workpieces and introducing a filler material to create a pool of molten material that solidifies into a robust joint.

• Brazing

• Soldering

• Glueing

• Welding

What is the unit for stress?

• kg/m2

• N/m2

• kM/N2

• N/kg2

Selected the correct answer

• Compression is a pushing effect from both end

• Tensile is a twisting effect

• Torsion is a pulling effect from both end

• Shear is sitting effect

What is the definition of strain in stress-strain graph?

• Strain is Changes in Length

• Strain is Area divided by Length

• Strain is Force divided by Area

• Strain is Changes in Length divided by Original Length

Select the correct metal failure for this definition "The effect on metal of repeated cycles of stress."

• Fatigue

• Creep

• Deformation

• Corrosion

What are the common types of corrosion (Multiple correct answer)

• Pitting Corrosion

• Crevice Corrosion

• Uniform Corrosion

• Slide Corrosion

What is the effect of High Temperature on Metal?

• Increase the Elasticity

• Increase Strength

• Recrystallisation and Grain Growth

• Enhance the longevity of the steel