Power Engineering 2A2 - Part 1
2025/2026 Exam Questions with 100%
Correct Answers | Latest Update
3 defined groups/categories of Metallurgy? - 🧠ANSWER ✔✔- Extractive
- Mechanical
- Physical
Define 'Extractive' Metallurgy. - 🧠ANSWER ✔✔- The study of extraction
and purification of metals from their ores. This includes a stepped process
which can utilize Pyrometallurgy, Hydrometallurgy or Electrometallurgy
Define Pyrometallurgy: - 🧠ANSWER ✔✔- Melting the ore in a furnace to
release the metal
,Define Hydrometallurgy: - 🧠ANSWER ✔✔- Dissolving the metal from the
ore and recovering it as a powder
Define Electrometallurgy: - 🧠ANSWER ✔✔- Dissolving the metal from the
ore with the use of electricity, plate the metal out of solution
What is Mechanical Metallurgy? - 🧠ANSWER ✔✔- The study of the
techniques and mechanical forces that shape and make finished forms of
metal
- The study of the effects of stress, time and temperature
What is Physical Metallurgy? - 🧠ANSWER ✔✔- The study of the structure
of metals - property of metals are intimately related to their structures
- The physical metallurgy - or structure of a metal - can be changed by
modifying chemical composition, alloys and heat treatments
General characteristics of 'Metals'? - 🧠ANSWER ✔✔- Good conductors of
heat and electricity
- Generally malleable and ductile
- Occur naturally in ores in the form of chemical compounds such as
sulphides or oxides
,What are Noble Metals? - 🧠ANSWER ✔✔- A metal that resists chemical
action and does not corrode or oxidize, and is not easily attacked by acids
Metals can exist in 3 common physical states depending on what? -
🧠ANSWER ✔✔Temperature and pressure
Describe 'latent heat of fusion' in relation to metals. - 🧠ANSWER ✔✔- Het
energy is added until temperature no longer increases and the cohesive
bonds holding the individual atoms together break. This causes the metal
to melt.
The main concern with metallurgy and industry is...? - 🧠ANSWER ✔✔- The
complexity of the solid-to liquid-to solid phase changes metals go through
as they are refined
- The chemical and physical properties exhibited by them during these
transitions
Define 'Unit Cells' in relation to the atomic structure of metals. - 🧠ANSWER
✔✔- When a metal changes state from molten to solid, the rigid atomic
structure of the atoms settles in 1 of 3 possible configurations:
1) Face-centered cubic (FCC) unit cells
2) Body-centered cubic (BCC) unit cells
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 3) Close Packed Hexagonal (CPH) unit cells
Face-centered Cubic (FCC) unit cells? - 🧠ANSWER ✔✔- 14 atoms make
up the FCC cell
- Properties include: high ductility, low shear, low tensile strength, but good
thermal and electrical conductivity
Define Ductility: - 🧠ANSWER ✔✔- A measure of a metals ability to undergo
significant plastic deformation before rupture, which may be expressed as
elongation or percent area reduction from a tensile test.
- Often characterized by a materials ability to be stretched into a wire
Define Malleability: - 🧠ANSWER ✔✔- A materials ability to deform under
compressive stress; often characterized by a materials ability to form a thin
sheet by hammering or rolling - without fracture.
Both ductility and malleability are aspects of a materials...? - 🧠ANSWER
✔✔- Plasticity: the extent to which a solid material can be plastically
deformed without fracture
- The plasticity is dependant on temperature and pressure
2025/2026 Exam Questions with 100%
Correct Answers | Latest Update
3 defined groups/categories of Metallurgy? - 🧠ANSWER ✔✔- Extractive
- Mechanical
- Physical
Define 'Extractive' Metallurgy. - 🧠ANSWER ✔✔- The study of extraction
and purification of metals from their ores. This includes a stepped process
which can utilize Pyrometallurgy, Hydrometallurgy or Electrometallurgy
Define Pyrometallurgy: - 🧠ANSWER ✔✔- Melting the ore in a furnace to
release the metal
,Define Hydrometallurgy: - 🧠ANSWER ✔✔- Dissolving the metal from the
ore and recovering it as a powder
Define Electrometallurgy: - 🧠ANSWER ✔✔- Dissolving the metal from the
ore with the use of electricity, plate the metal out of solution
What is Mechanical Metallurgy? - 🧠ANSWER ✔✔- The study of the
techniques and mechanical forces that shape and make finished forms of
metal
- The study of the effects of stress, time and temperature
What is Physical Metallurgy? - 🧠ANSWER ✔✔- The study of the structure
of metals - property of metals are intimately related to their structures
- The physical metallurgy - or structure of a metal - can be changed by
modifying chemical composition, alloys and heat treatments
General characteristics of 'Metals'? - 🧠ANSWER ✔✔- Good conductors of
heat and electricity
- Generally malleable and ductile
- Occur naturally in ores in the form of chemical compounds such as
sulphides or oxides
,What are Noble Metals? - 🧠ANSWER ✔✔- A metal that resists chemical
action and does not corrode or oxidize, and is not easily attacked by acids
Metals can exist in 3 common physical states depending on what? -
🧠ANSWER ✔✔Temperature and pressure
Describe 'latent heat of fusion' in relation to metals. - 🧠ANSWER ✔✔- Het
energy is added until temperature no longer increases and the cohesive
bonds holding the individual atoms together break. This causes the metal
to melt.
The main concern with metallurgy and industry is...? - 🧠ANSWER ✔✔- The
complexity of the solid-to liquid-to solid phase changes metals go through
as they are refined
- The chemical and physical properties exhibited by them during these
transitions
Define 'Unit Cells' in relation to the atomic structure of metals. - 🧠ANSWER
✔✔- When a metal changes state from molten to solid, the rigid atomic
structure of the atoms settles in 1 of 3 possible configurations:
1) Face-centered cubic (FCC) unit cells
2) Body-centered cubic (BCC) unit cells
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 3) Close Packed Hexagonal (CPH) unit cells
Face-centered Cubic (FCC) unit cells? - 🧠ANSWER ✔✔- 14 atoms make
up the FCC cell
- Properties include: high ductility, low shear, low tensile strength, but good
thermal and electrical conductivity
Define Ductility: - 🧠ANSWER ✔✔- A measure of a metals ability to undergo
significant plastic deformation before rupture, which may be expressed as
elongation or percent area reduction from a tensile test.
- Often characterized by a materials ability to be stretched into a wire
Define Malleability: - 🧠ANSWER ✔✔- A materials ability to deform under
compressive stress; often characterized by a materials ability to form a thin
sheet by hammering or rolling - without fracture.
Both ductility and malleability are aspects of a materials...? - 🧠ANSWER
✔✔- Plasticity: the extent to which a solid material can be plastically
deformed without fracture
- The plasticity is dependant on temperature and pressure
