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Engineering Studies MCQ

Total questions: 41

Worksheet time: 45mins

Name
Class
Date
1.

What structure is Austenite?

a)

FCC

b)

BCC

c)

HCP

d)

FCB

2.

What are the constituents of Pearlite?

a)

Ferrite

b)

Cementite

c)

Cementite & Ferrite

d)

Austenite

3.

Martensite has which of the following properties?

a)

Ductility

b)

Strength

c)

Hardness

d)

Elasticity

4.

Cementite has which of the following chemical formulas?

a)

Fe3C

b)

FeC3

c)

FeC

d)

Fe2C

5.

Which of the following properties does Ferrite have?

a)

Ductility

b)

Hardness

c)

Toughness

d)

Elasticity

6.

Cast iron has a minimum of:

a)

2.5% Carbon

b)

2% Carbon

c)

1.5% Carbon

d)

2.3% Carbon

7.

Increasing Carbon Content in Steels:

a)

Decreases Hardness

b)

Decreases in Ductility

c)

Increases in Brittleness

d)

Increases in in Tensile strength up to 0.9% C

8.

Which Microstructure represents 0.2% Carbon Steel?

a)
b)
c)
d)
9.

Which Microstructure represents 0.4% Carbon Steel?

a)
b)
c)
d)
10.

Which Microstructure represents 0.8% Carbon Steel?

a)
b)
c)
d)
11.

Which Microstructure represents 1.3% Carbon Steel?

a)
b)
c)
d)
12.

Which process needs to be completed to Austenite to form Martensite?

a)

Quenching

b)

Tempering

c)

Rolling

d)

Casting

13.

Which of these is not a function of alloy steels?

a)

Increases strength

b)

Reduces cost

c)

Improves ductility

d)

Improves machinability

14.

Stainless steel is so called because of its -------------------

a)

High strength

b)

High corrosion resistance

c)

High ductility

d)

Brittleness

15.

The purposes of alloying steel includes

a)

Improved Corrosion resistance

b)

Improved machinability

c)

Improved ductility

d)

Low hardenability

16.

What effect does carbon have on steel?

a)

Hardness

b)

Machinability

c)

Toughness

d)

Strength

17.

The properties of steel can also be slightly modified using heat treatments. A heat treatment ...

a)

is heating the iron before it is alloyed

b)

is heating the additives before adding them into the pure iron

c)

is subjecting the alloying chamber to a specific time/temperature setting

d)

changes the crystal structure of the steel thereby effecting its properties

e)

is subjecting the finished alloy to specific time/temperature setting

18.

Annealing is ...

a)

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

b)

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

c)

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

d)

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

19.

Quenching is ...

a)

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

b)

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

c)

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

d)

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

20.

Tempering is ...

a)

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

b)

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

c)

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

d)

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

21.

Varying the amounts of additives added to iron changes the properties of the steel alloy created. The material properties which can be effected are ...

a)

hardness

b)

ductility

c)

tensile strength

d)

opacity

22.

What is the SI Base unit for Time?

a)

Hour

b)

Minute

c)

Second

d)

Day

23.

Which prefix has a value of 106?

a)

G

b)

M

c)

k

d)

m

e)

μ

24.

Which option is an example of a Vector?

a)

3km North

b)

100 km/h

c)

40 s

d)

27 ms-1

25.

Which arrow is pointing to the 'sense' of the vector?

a)

A

b)

B

c)

C

d)

D

26.

Which option describes Newton's 1st Law of Motion?

a)

F = ma

b)

For every action there is an equal & opposite reaction

c)

A body will remain stationary or at constant velocity unless an unbalanced force acts upon it

27.

Which option describes Newton's 2nd Law of Motion?

a)

F = ma

b)

For every action there is an equal & opposite reaction

c)

A body will remain stationary or at constant velocity unless an unbalanced force acts upon it

28.

Mr O'Brien placed this coin on the balance in the classroom. How much does it weigh?

a)

5.67 g

b)

5.67 kg

c)

0.0567 N

d)

56.7 N

29.

Mr O'Brien placed this coin on the balance whilst he was on the moon (Acceleration due to gravity on the moon is 1.620 m/s2). What is the mass of the coin on the moon?

a)

5.67 g

b)

5.67 kg

c)

0.0091854 N

d)

9.1854 N

30.

Which property is being defined - "The ability of a material to be hammered or rolled into thin sheets"

a)

Ductility

b)

Malleability

c)

Strength

d)

Stiffness

31.

What is the physical property that can be calculated by measuring the mass and dividing it by volume?

a)

Weight

b)

Porosity

c)

Density

d)

Mass

32.

What subatomic particles would you find in the nucleus of an atom?

a)

Protons only

b)

Protons and Neutrons

c)

Neutrons and Electrons

d)

Protons and Electrons

33.

Which subatomic particle has a neutral or no charge?

a)

Proton

b)

Electron

c)

Neutron

34.
What are valence electrons?
a)
electrons on the first orbital always
b)
nucleus
c)
the outermost shell
d)
the number of electrons on the outermost orbital
35.

When an atom loses an electron, it becomes a:

a)

positive ion

b)

negative ion

c)

neutral ion

d)

neutral atom

36.
Why do ionic bonds form?
a)
so the number of protons equals the number of electrons
b)
to fill the outermost energy level
c)
so an atom can become unstable
37.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
38.

What type of bond is shown in this picture? It is the WEAKEST type & attracts one water compound to another!

a)

Ionic bond

b)

Polar Covalent (dipole)

c)

Nonpolar Covalent

d)

Van der Waals force (dipole)

39.

Which of the following is the most workable of crystal structures?

a)

FCC

b)

BCC

c)

HCP

d)

Simple cubic

40.

Identify the unit cell

a)

simple cubic

b)

BCC

c)

FCC

d)

HCP

41.

Define the term 'allotrope'

a)

Atoms with same proton number but different number of neutrons

b)

Atoms with same proton number but different mass number

c)

Atoms in different arrangement in structure

d)

Atoms in different arrangement and different physical form

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