Manufacturing Technology (3151912) MCQs

MCQs of Forming and Shaping Processes

Showing 1 to 10 out of 52 Questions
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1.

The cold working of metals is carried out

(a)

at the recrystallisation temperature
(b)

below the recrystallisation temperature
(c)

above the recrystallisation temperature
(d)

at any temperature
Answer:

Option (b)

2.

Cold working of metal increases

(a)

tensile strength
(b)

yield strength
(c)

hardness
(d)

all of these
Answer:

Option (d)

3.

The hot working of metals is carried out

(a)

at the recrystallisation temperature
(b)

below the recrystallisation temperature
(c)

above the recrystallisation temperature
(d)

at any temperature
Answer:

Option (c)

4.

During hot working of metals

(a)

porosity of the metal is largely eliminated
(b)

grain structure of the metal is refined
(c)

mechanical properties are improved due to refinement of grains
(d)

all of the above
Answer:

Option (d)

5.

The increase in hardness due to cold working is called

(a)

Cold hardening
(b)

Hot hardening
(c)

Work hardening
(d)

Age-hardening
Answer:

Option (c)

6.

During cold working process

(a)

grain structure is distorted
(b)

strength and hardness of metal increases
(c)

close dimensional tolerance can be maintained
(d)

all of the above
Answer:

Option (d)

7.

The metal is subjected to mechanical working for

(a)

refining grain size
(b)

reducing original block into desired shape
(c)

controlling the direction of flow lines
(d)

all of these
Answer:

Option (d)

8.

The increase in hardness due to cold working, is called

(a)

age-hardening
(b)

work-hardening
(c)

induction hardening
(d)

flame hardening
Answer:

Option (b)

9.

During hot working of metals

(a)

poor surface finish is produced
(b)

scale is formed on the metal surface
(c)

close tolerances can not be maintained
(d)

all of these
Answer:

Option (d)

10.

The recrystallisation temperature of steel is

(a)

400° C
(b)

600° C
(c)

800° C
(d)

none of these
Answer:

Option (c)

Showing 1 to 10 out of 52 Questions
1 2 3 4 5 6