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Engineering-materials Questions Set 12:

Quiz Mode

The molding sand in a moist state is called

Backing sand

Loam sand

Parting sand

Green sand

Solution:

Upper and lower yield points are observed in

all pure metals

carbon steels

brittle metals

an α–β brass

Solution:

The hardening process is carried out on high carbon steel.

Low carbon

High carbon

Medium carbon

None of these

Solution:

In a single-component condensed system, if the degree of freedom is zero, the maximum number of phases that can co-exist is _____.

Solution:

Two edge dislocations on the same slip plane and with the same sign will:

Exert no force

Exert an attractive force

Exert a repulsive force

Exert a shearing force

Solution:

When a test specimen is stressed slightly beyond the yield point and then unloaded, its yield strength will:

decrease

increase

remain the same

become equal to the ultimate tensile strength

Solution:

The main purpose of spheroidizing treatment is to improve

hardenability of low carbon steels

machinability of low carbon steels

hardenability of high carbon steels

machinability of high carbon steels

Solution:

What is not a benefit of adding Manganese to Iron?

It increases the strength

For removing ill effect of sulphur on Fe

It has low shear strength so increases the machinability

It reduces the melting point of Iron

Solution:

In the stress-strain curve of a material, the region between which points does necking occur?

Between the yield stress and the ultimate tensile stress

Between 0 and the yield stress

Between the ultimate tensile stress and the point of fracture

After the point of fracture

Solution:

Which of the following quantities is larger in a hexagonal close-packed (HCP) crystal structure as compared to a face-centered cubic (FCC) crystal structure, if the constituent atoms are similar?

Number of particles per unit cell

Volume per unit cell

Mass per unit cell

All of the mentioned

Engineering-materials Questions Set 12:

The molding sand in a moist state is called

Solution:

Upper and lower yield points are observed in

Solution:

The hardening process is carried out on high carbon steel.

Solution:

In a single-component condensed system, if the degree of freedom is zero, the maximum number of phases that can co-exist is _____.

Solution:

Two edge dislocations on the same slip plane and with the same sign will:

Solution:

When a test specimen is stressed slightly beyond the yield point and then unloaded, its yield strength will:

Solution:

The main purpose of spheroidizing treatment is to improve

Solution:

What is not a benefit of adding Manganese to Iron?

Solution:

In the stress-strain curve of a material, the region between which points does necking occur?

Solution:

Which of the following quantities is larger in a hexagonal close-packed (HCP) crystal structure as compared to a face-centered cubic (FCC) crystal structure, if the constituent atoms are similar?

Solution:

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