Free Printable ENG1001 Tutorial 2

1.

Stress is...

a)

an external force

b)

an internal resistive force

c)

an axial force

d)

a radial force

2.

Which of these is not a type of stress?

a)

Tensile stress

b)

Shear stress

c)

Volumetric stress

d)

Compressive stress

3.

Strain has units of...

a)

metres, $\mathrm{m}$

b)

Newtons, $\mathrm{N}$

c)

Pascals, $\mathrm{Pa}$

d)

nothing

4.

Stress has units of...

a)

metres, $\mathrm{m}$

b)

Newtons, $\mathrm{N}$

c)

Pascals, $\mathrm{Pa}$

d)

nothing

5.

Hooke's law is valid for (a) elastic materials.

6.

Stainless steel has a Young's modulus of 210 GPa. This is equivalent to:

a)

$210\times10^6$ Pa

b)

$210\times10^9$ Pa

c)

$2.1\times10^{11}$ Pa

d)

$2.1\times10^{12}$ Pa

7.

The equation to find a change in length for a linear-elastic material is given by:

a)

$\Delta l\ =\ \frac{Fl_0}{EA_0}$

b)

$\Delta l\ =\ \frac{Al_0}{EF}$

c)

$\Delta l\ =\ \frac{El_0}{FA_0}$

d)

$\Delta l\ =\ \frac{EF}{A_0l_0}$

8.

The maximum stress that a material can withstand without breaking is called the (a) tensile stress.

9.

Dog bone shapes for specimens are used in tensile testing because they are... (select all that apply)

a)

easy to mount and manufacture

b)

guarantee that fracture doesn't occur at the ends of the sample

c)

reduce the chance of slippage whilst testing

d)

confine deformation in the uniformly-thick centre region

10.

On this diagram, which letter shows the section where the material is undergoing plastic deformation?

a)

A

b)

B

c)

C

d)

D

11.

Consider a metal beam bending under a load. What are the labels for A and B shown in the figure that describe the stress in the beam at these points?

a)

A: Tension, B: Compression

b)

A: Compression, B: Tension

c)

A: Tension, B: Tension

d)

A: Compression, B: Compression

ENG1001 Tutorial 2

Total questions: 11

Worksheet time: 6mins

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