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. Rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform.
7) Which of the following methods can be used for manufacturing 2 meter long seamless metallic tubes?
Answer is:
Extrusion and rolling
Explanation:
Related Workshop Technology MCQ with Answers
Answer is:
at the same speed but in opposite direction
Explanation:
A two high rolling mill consists of two rolls which rotate At the same speed but in opposite direction.
Answer is:
The upper and bottom rolls rotate in the same direction whereas the middle roll rotate in opposite direction.
Explanation:
A three high rolling mill consists of three rolls placed one above the other and the upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction.
Answer is:
two are working rolls and two are backing up rolls
Explanation:
In a four high rolling mill, there are four rolls out of which Two are working rolls and two are backing up rolls.
Answer is:
larger than
Explanation:
In a four high rolling mill, the diameter of backing up rolls is Larger than the diameter of working rolls.