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Engineering-materials Questions Set 16:

Quiz Mode

What is the color of finished zinc metal?

Reddish black

Greyish yellow

Bluish grey

Green

Solution:

Which mineral on the Mohs hardness scale has the lowest hardness?

Talc

Lead

Diamond

Steel

Solution:

What is the typical carbon content range in high carbon steel?

0.3 - 0.6%

0.008 - 0.3%

0.6 - 2%

2 - 4%

Solution:

Which of the following are the components of a brass alloy?

Copper only

Zinc only

Brass, copper, zinc

Copper and zinc

Solution:

If N is the number of tetrahedral voids in a close-packed structure, then the number of octahedral voids is:

N/4

N/2

Solution:

In which of the following Bravais lattices are not all axial angles right angles?

Tetragonal

Rhombohedral

Orthorhombic

Cubic

Solution:

The crystal structure of austenite is

body-centered cubic

face-centered cubic

hexagonal close-packed

body-centered tetragonal

Solution:

What is the primary cause of diffusion?

Random motion of particles

Concentration gradient

Kinetic energy of particles

All of the mentioned

Solution:

What type of crystallographic direction will the burger vector of dislocation for a metallic material show?

Closed-packed crystallographic direction

Parallel-packed crystallographic direction

Rounded-packed crystallographic direction

Open-packed crystallographic direction

Solution:

During strain aging, what happens to the strength and ductility of the material?

The strength of the material increases, and the ductility decreases.

The strength of the material decreases, and the ductility increases.

Both the strength and ductility of the material decrease.

Both the strength and ductility of the material increase.

Engineering-materials Questions Set 16:

What is the color of finished zinc metal?

Solution:

Which mineral on the Mohs hardness scale has the lowest hardness?

Solution:

What is the typical carbon content range in high carbon steel?

Solution:

Which of the following are the components of a brass alloy?

Solution:

If N is the number of tetrahedral voids in a close-packed structure, then the number of octahedral voids is:

Solution:

In which of the following Bravais lattices are not all axial angles right angles?

Solution:

The crystal structure of austenite is

Solution:

What is the primary cause of diffusion?

Solution:

What type of crystallographic direction will the burger vector of dislocation for a metallic material show?

Solution:

During strain aging, what happens to the strength and ductility of the material?

Solution:

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