Chapter 3 DQV10082 Revision

Metal are...................

(more than 1 answer)

• large molecule (macromolecule) composed of repeating structural units

• Element, compound, or alloy that is a good conductor of both electricity and heat

• Combination two elements with different properties

• combinations of metallic elements and have large numbers of non localized electrons

Metal can be classified as Ferrous and Non Ferrous

• True

• False

Cast Iron is classified under Ferrous metals. Below are types of Cast Iron EXCEPT

• White iron

• Ductile Iron

• Black iron

• Malleable iron

Stainless steel is classified under low alloy steel

• True

• False

Select the CORRECT FORMING OPERATION of metal fabrication process

• Forging

• Drawing

• Rolling

• All Above

A bar of metal  is forced  through  a die orifice by a compressive force that is applied to a ram;

the extruded  piece that emerges  has  the  desired  shape  and  a reduced  cross-sectional area.

This if refer to type of FORMING OPERATION.....

• Drawing

• Extrusion

• Rolling

• Forging

Figure shown metallic crystal structure. Namely A, B & C

• A:BCC

  B:HCP

  C:FCC

• A: HCP

  B:FCC

  C:BCC

• A:FCC

  B:HCP

  C:BCC

• A:FCC

  B:BCC

  C:HCP

Below are types of non-ferrous metal EXCEPT

• Copper

• Aluminium

• Steel

• Magnesium

Medium carbon steel contains 0.05%-0.3% carbon

• True

• False

Figure shown forming operation .....

• Forging

• Rolling

• Extrusion

• Drawing