Engineering Principles

austenite has maximum solubility in what percent of carbon

• 2.14

• 4.15

• 6.27

• 3.65

Below are material removal processes except for

• Turning

• Forging

• Drilling

• Milling

Quenching is ...

• heating the steel alloy to a sufficiently high temperature to soften it, and remove internal stresses

• heating the steel alloy to a high temperature and rapidly cooing it, which hardens it but also makes it brittle

• moderately heating the finished steel alloy to remove some of the internal stresses and make it softer and less brittle

• storing the steel alloy at room temperature for a long period of time to cure it

Property‑enhancing processes are performed to improve mechanical or physical properties of work material

• True

• False

What is a Composite Material

• A material made from only one base constituent

• An organic material

• A material made from only two or more base constituents

• A material that can be recycled

What is the straight line equation?

• $ax^2\ +\ bx\ +\ c\ =\ 0$

• $Y\ =\ mx\ +\ c$

The phase mixture of Ferrite and Cementite is …...

• cementite

• pearlite

• ferrite

• austenite

Steel is ...

• a man made mixture of iron with small amounts of other elements added called an alloy

• a natural ore including iron and other elements found in the earths crust

• a modern material developed after the industrial revolution

• an alloy which can be found in the earths crust

What type of projection is shown on the right?

• Sketch

• Isometric

• Orthographic

• Oblique

Tempering is ...

• heating the steel alloy to a sufficiently high temperature to soften it, and remove built in stresses

• heating the steel alloy to a high temperature and rapidly cooling it, which hardens it but also makes it brittle

• moderately heating the finished steel alloy to remove some of the internal stresses and make it softer and less brittle

• storing the steel alloy at room temperature for a long period of time in order to cure it