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Engineering-materials Questions Set 6:

Quiz Mode

The stress-strain behavior of natural rubber is

Linear

Fixed

Nonlinear

None of the above

Solution:

Which of the following alloying elements is added as a degasser?

Silicon

Nickel

Titanium

Sulfur

Solution:

Which of the following materials cannot be used as bio-materials?

Metals

Ceramics

Polymers

None of the above

Solution:

Which type of dislocation can glide but not climb?

Screw dislocation

Edge dislocation

Jog dislocation

Mixed dislocation

Solution:

What is the maximum dislocation density of a material when it is heavily deformed?

10¹⁰ mm^-2

10⁹ mm^-2

10¹¹ mm^-2

10¹² mm^-2

Solution:

The capacity of a material to absorb energy when deformed elastically and then to have this energy recovered upon unloading is called

endurance

resilience

toughness

ductility

Solution:

Which statement about crystalline materials is not true?

Atoms are regularly arranged

Atoms are randomly distributed

Interatomic forces are strong

Crystalline materials are harder than amorphous

Solution:

HCP (Hexagonal Close-Packed) and BCC (Body-Centered Cubic) are called close-packed crystal structures. What property do close-packed structures have?

Highest packing efficiency

Highest void fraction

Highest density

All of the mentioned

Solution:

What is the meaning of resilience in the stress-strain curve?

The area in the elastic region of the stress-strain curve

The area in the elastic and plastic regions of the stress-strain curve

The area in the plastic region of the stress-strain curve

None of the above

Solution:

Which of the following statements about phase diagrams is not true?

The parameters affecting the phase structure are Temperature, Pressure, and Composition.

The example of a unary phase diagram is the Fe-C phase diagram.

The three phases of water are in equilibrium at 273.16 K.

None of the above

Engineering-materials Questions Set 6:

The stress-strain behavior of natural rubber is

Solution:

Which of the following alloying elements is added as a degasser?

Solution:

Which of the following materials cannot be used as bio-materials?

Solution:

Which type of dislocation can glide but not climb?

Solution:

What is the maximum dislocation density of a material when it is heavily deformed?

Solution:

The capacity of a material to absorb energy when deformed elastically and then to have this energy recovered upon unloading is called

Solution:

Which statement about crystalline materials is not true?

Solution:

HCP (Hexagonal Close-Packed) and BCC (Body-Centered Cubic) are called close-packed crystal structures. What property do close-packed structures have?

Solution:

What is the meaning of resilience in the stress-strain curve?

Solution:

Which of the following statements about phase diagrams is not true?

Solution:

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