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Engineering-materials Questions Set 19:

Quiz Mode

Ferrites are

Ferro-magnetic

Ferrimagnetic

Para-magnetic

anti-magnetic

Solution:

Which element is added to copper to improve its machinability?

Vanadium

Tin

Zinc

Sulfur

Solution:

What is the typical range of carbon content in cast iron?

Less than 2%

None of these

2% to 6.67%

0% to 1.8%

Solution:

What is the orientation of the dislocation line for an edge dislocation?

Parallel

Perpendicular

Circular

Both parallel and perpendicular

Solution:

Presence of hydrogen in steel causes

reduced neutron absorption cross section

improved weldability

embrittlement

corrosion resistance

Solution:

Which of the following lattice structures has the highest void fraction?

Body centered cubic

Hexagonal close packed

Face centered cubic

Primitive cubic

Solution:

Which of the following has the least number of atoms?

One gram of Hydrogen gas

One gram of Helium gas

One gram-mole of Oxygen gas

One gram-mole of Chlorine gas

Solution:

What is the difference between the angle of Burgers vector and dislocation line in edge dislocation and screw dislocation?

-90 degrees

0 degrees

45 degrees

90 degrees

Solution:

What does phase transformation involve?

Movement/rearrangement of atoms

Changes in microstructure

Transformation rate kinetics

Transformation rate kinetics, movement/rearrangement of atoms, and changes in microstructure

Solution:

For steady-state diffusion, diffusion flux is proportional to the concentration gradient. The concentration gradient is:

Rate of change of concentration with respect to space

Rate of change of concentration with respect to time

Difference in concentrations at the source and sink

Ratio of concentrations at source and sink

Engineering-materials Questions Set 19:

Ferrites are

Solution:

Which element is added to copper to improve its machinability?

Solution:

What is the typical range of carbon content in cast iron?

Solution:

What is the orientation of the dislocation line for an edge dislocation?

Solution:

Presence of hydrogen in steel causes

Solution:

Which of the following lattice structures has the highest void fraction?

Solution:

Which of the following has the least number of atoms?

Solution:

What is the difference between the angle of Burgers vector and dislocation line in edge dislocation and screw dislocation?

Solution:

What does phase transformation involve?

Solution:

For steady-state diffusion, diffusion flux is proportional to the concentration gradient. The concentration gradient is:

Solution:

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