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Engineering-materials Questions Set 24:

Quiz Mode

Oil gas is obtained by the cracking of

Heavy oil

Diesel oil

Gasoline

Kerosene oil

Solution:

Refractory materials can withstand

high temperature

low temperature

corrosion

abrasion

Solution:

Which of the following is not a nickel ore?

Pentlandite

Chalcopyrite

Pyrrhotite

Rutile

Solution:

Bainite consists of

Cementite and austenite

Cementite and ferrite

Austenite and ferrite

None of the above

Solution:

What is the formula for Schmid's factor?

(cos α) x (sin β)

(cos α) x (cos β)

(cos α) x (sec β)

(sin α) x (sin β)

Solution:

What is formed when the electronegativities of atoms differ significantly?

Maraging steel

Intermetallic compound

Liquid solution

Solid solutions

Solution:

Addition of vanadium in steel results in improvement of

heat treatability by quenching

hardenability

fatigue strength

resistance to oxidation at elevated temperature

Solution:

How does phosphorus in cast iron affect its properties?

Increases fusibility, fluidity but introduces brittleness

Makes the cast iron soft and easily machinable

Acts as a graphitizer

Promotes the formation of graphite

Solution:

Which one of the following statements about the advantages of cyaniding is incorrect?

Distortion is more easily avoided

Hardness change from case to core is gradual

Flaking is eliminated

Process can be used for high carbon steels

Solution:

What is the main reason why carburized machine components have a higher endurance limit?

It raises the yield point of the material

It produces a better surface finish

It introduces a compressive layer on the surface

It suppresses any stress concentration produced in the component

Engineering-materials Questions Set 24:

Oil gas is obtained by the cracking of

Solution:

Refractory materials can withstand

Solution:

Which of the following is not a nickel ore?

Solution:

Bainite consists of

Solution:

What is the formula for Schmid's factor?

Solution:

What is formed when the electronegativities of atoms differ significantly?

Solution:

Addition of vanadium in steel results in improvement of

Solution:

How does phosphorus in cast iron affect its properties?

Solution:

Which one of the following statements about the advantages of cyaniding is incorrect?

Solution:

What is the main reason why carburized machine components have a higher endurance limit?

Solution:

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