Manufacturing Technology (3151912) MCQs

MCQs of Forming and Shaping Processes

Showing 11 to 20 out of 52 Questions
1 2 3 4 5 6
11.

The ductility of a material with work hardening,

(a)

Increases
(b)

Decreases
(c)

Remains unaffected
(d)

May increase/decrease depending on its tensile strength
Answer:

Option (b)

12.

In order to get uniform thickness of the plate by rolling process, one provides

(a)

camber on the rolls
(b)

offset on the rolls
(c)

hardening of the rolls
(d)

antifriction bearings
Answer:

Option (c)

13.

The important mechanical property for a material to be successfully rolled or forged is

(a)

Brittleness
(b)

Malleability
(c)

Elasticity
(d)

Machinability
Answer:

Option (b)

14.

A two high rolling mill consists of two rolls which rotate

(a)

at the same speed and in the same direction
(b)

at the same speed but in opposite direction
(c)

at different speeds and in the same direction
(d)

at different speeds and in the opposite direction
Answer:

Option (b)

15.

A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?

(a)

The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction.
(b)

The upper and bottom rolls rotate in the same direction whereas the middle roll rotate in opposite direction.
(c)

The bottom and middle roll rotate in the same direction.
(d)

any one of the above
Answer:

Option (b)

16.

In a four high rolling mill, there are four rolls out of which

(a)

one is working roll and three are backing up rolls
(b)

two are working rolls and two are backing up rolls
(c)

three are working rolls and one is backing up roll
(d)

all of the four are working rolls
Answer:

Option (b)

17.

In four high rolling mill the bigger rollers are called

(a)

Guide rolls
(b)

Back up rolls
(c)

Main rolls
(d)

Support rolls
Answer:

Option (b)

18.

In a four high rolling mill, the diameter of backing up rolls is __________ the diameter of working rolls.

(a)

equal to
(b)

smaller than
(c)

larger than
(d)

none of these
Answer:

Option (c)

19.

The minimum size of a bloom is

(a)

5 cm x 5 cm
(b)

10 cm x 10 cm
(c)

15 cm x 15 cm
(d)

20 cm x 20 cm
Answer:

Option (c)

20.

Thread rolling is restricted to

(a)

ferrous materials
(b)

ductile materials
(c)

hard materials
(d)

none of these
Answer:

Option (b)

Showing 11 to 20 out of 52 Questions
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