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

Correct Answer: 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

Extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed through a die of the desired cross-section.
Extrusion is 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.
Bissoy MCQ
#Mechanical Engineering #Workshop Technology

Related Questions

Hot extrusion process is not used for making
A Cast iron pipe for domestic water supply
B Aluminium curtain rods
C Stainless steel tubes used in furnitures
D Any of these
In extrusion of metals, which of the following statement is true ?
A Speed of the extruded material is same as that of ram speed
B Redundant work is a function of the die angle
C Relative motion between the billet surface and the container wall is always present
D Hollow ram is used for indirect extrusion
Collapsible tubes for tooth paste are produced by __________ extrusion.
A Direct
B Indirect
C Impact
D None of these
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
Which of the following exemplifies resemblence with the extrusion process ?
A Pneumatic ejection of abrasive solid particles through a nozzle
B Toothpaste pouring out of the tube
C Ejection of abrasive slurry through an opening
D Viscous lubricant pouring out through its container's mouth
Hot extrusion of aluminium is done in the temperature range of __________ °C.
A 550-600
B 450-500
C 350-400
D 250-300
For spinning viscose rayon, the extrusion spinnerettes are made of
A Platinum or gold alloys
B High carbon steel
C Aluminium
D Nickel

Next steps