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Topic 5 Mechanical Properties of Polymer

Total questions: 20

Worksheet time: 4mins

Name
Class
Date
1.

It is defined as the ratio of the measured force to the instantaneous cross-sectional area at a given elongation.

a)

Engineering stress

b)

Stiffness

c)

True Stress

d)

Shear stress

2.

It is measured by the area under stress-strain curve.

a)

Toughness

b)

Elasticity

c)

Resilience

d)

Hardness

3.

Typically this class of polymer exhibits a yield point, followed by extensive elongation at almost constant stress.

a)

Rubber-Like

b)

Metal-Like

c)

Glass-Like

d)

Ceramic-Like

4.

It is defined as ability to absorb energy without suffering permanent deformation.

a)

Toughness

b)

Strength

c)

Elasticity

d)

Resilience

5.

It is defined as ability to carry stress without suffering a permanent deformation.

a)

Resilience

b)

Elasticity

c)

Toughness

d)

Stiffness

6.

It is defined as the ratio of the measured force to the original cross-sectional area.

a)

Engineering stress

b)

Stiffness

c)

True Stress

d)

Shear stress

7.

It is the ratio of the induced transverse strain to the axial strain.

a)

Strain

b)

Golden ratio

c)

Young's Modulus

d)

Poisson’s ratio

8.

It is defined as ability to carry stress without changing dimension.

a)

Stiffness

b)

Hardness

c)

Toughness

d)

Elasticity

9.

It is defined as ability to sustain dead load

a)

Strength

b)

Resilience

c)

True Stress

d)

Ruptures

10.

This class of polymer exhibits very small strain at fracture

a)

Rubber-Like

b)

Metal-Like

c)

Glass-Like

d)

Ceramic-Like

11.

It resists plastic deformation by preventing chain slippage.

a)

Rubber-Like

b)

Metal-Like

c)

Glass-Like

d)

Ceramic-Like

12.

It is the rate of instantaneous increase in the instantaneous gauge length

a)

True stress

b)

True strain

c)

Engineering strain

d)

Engineering stress

13.

It is defined as the amount of deformation in the direction of the applied force divided by the initial length of the material.

a)

True stress

b)

True strain

c)

Engineering strain

d)

Engineering stress

14.

What factor that contributes the stress-strain behavior as shown above?

a)

Pressure

b)

Molecular Weight

c)

Temperature

d)

Degree of Crystallinity

15.

What factor that contributes the stress-strain behavior as shown above?

a)

Cross Linking

b)

Molecular Weight

c)

Temperature

d)

Degree of Crystallinity

16.

The best terms to describe mechanical characteristics of polymer 1 are

a)

Soft and Tough

b)

Stiff and Strong

c)

Soft and Weak

d)

Stiff and Brittle

e)

Stiff and Tough

17.

The best terms to describe mechanical characteristics of polymer 2 are

a)

Soft and Tough

b)

Stiff and Strong

c)

Soft and Weak

d)

Stiff and Brittle

e)

Stiff and Tough

18.

The best terms to describe mechanical characteristics of polymer 3 are

a)

Soft and Tough

b)

Stiff and Strong

c)

Soft and Weak

d)

Stiff and Brittle

e)

Stiff and Tough

19.

The best terms to describe mechanical characteristics of polymer 4 are

a)

Soft and Tough

b)

Stiff and Strong

c)

Soft and Weak

d)

Stiff and Brittle

e)

Stiff and Tough

20.

The best terms to describe mechanical characteristics of polymer 5 are

a)

Soft and Tough

b)

Stiff and Strong

c)

Soft and Weak

d)

Stiff and Brittle

e)

Stiff and Tough