Manufacturing Technology (3151912) MCQs

MCQs of Forming and Shaping Processes

Showing 31 to 40 out of 52 Questions
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31.

The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as

(a)

hot piercing
(b)

extrusion
(c)

cold peening
(d)

cold heading
Answer:

Option (c)

32.

The important mechanical property of a material for extrusion purposes is

(a)

Continuity
(b)

Ductility
(c)

Elasticity
(d)

Plasticity
Answer:

Option (d)

33.

The metal extrusion process is generally used for producing

(a)

uniform solid sections
(b)

uniform hollow sections
(c)

uniform solid and hollow sections
(d)

varying solid and hollow sections
Answer:

Option (c)

34.

In which type of extrusion process, the movement of the extruded product is in the direction opposite to that of the deforming force

(a)

Direct
(b)

Forward
(c)

Backward
(d)

Die extrusion
Answer:

Option (c)

35.

Extrusion

(a)

is extensively used for making bolts and nuts
(b)

is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work
(c)

is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
(d)

consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part
Answer:

Option (d)

36.

In sheet metal work, the cutting force on the tool can be reduced by

(a)

grinding the cutting edges sharp
(b)

increasing the hardness of tool
(c)

providing shear on tool
(d)

increasing the hardness of die
Answer:

Option (a)

37.

The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of metal, is known as

(a)

drawing
(b)

squeezing
(c)

coining
(d)

planishing
Answer:

Option (a)

38.

Long wires are made by following process

(a)

Extrusion
(b)

Rolling
(c)

Piercing
(d)

Drawing
Answer:

Option (d)

39.

During drawing operation, the states of stress in cup would include

(a)

compressive stress in the flange
(b)

tensile stress in the wall
(c)

Combine compressive stress in the flange and tensile stress in the wall 
(d)

none of these
Answer:

Option (c)

40.

Piercing is an operation of cutting

(a)

a cylindrical hole in a sheet of metal by the punch and the die
(b)

a hole (other than cylindrical) in a sheet of metal by the punch and the die
(c)

a flat sheet to the desired shape
(d)

a number of holes evenly spaced in a regular pattern on a sheet of metal
Answer:

Option (b)

Showing 31 to 40 out of 52 Questions
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