Mechanical Engineering
GATE ME concept:extrusion PYQs
Build your understanding with focused practice from past exam papers.
How to practice concept:extrusion
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–3 of 3. Imported answers require independent review unless marked reviewed.
Question 29
Open questionMEMCQ1 markNeeds review
The “Earing” phenomenon in metal forming is associated with
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 58
Open questionMENAT2 marksNeeds review
A cylindrical billet of 100 mm diameter and 100 mm length is extruded by a direct extrusion process to produce a bar of L-section. The cross sectional dimensions of this L-section bar are shown in the figure. The total extrusion pressure (
) in MPa for the above process is related to extrusion ratio (
) as
where
is the mean flow strength of the billet material in MPa,
is the portion of the billet length remaining to be extruded in mm,
is the initial diameter of the billet in mm, and
is the die shape factor.If the mean flow strength of the billet material is 50 MPa and the die shape factor is 1.05, then the maximum force required at the start of extrusion is __________ kN (round off to one decimal place).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 14
Open questionMEMCQ1 markNeeds review
Match the following products with the suitable manufacturing process
Product | Manufacturing Process |
|---|---|
P — Toothpaste tube | 1 — Centrifugal casting |
Q — Metallic pipes | 2 — Blow moulding |
R — Plastic bottles | 3 — Rolling |
S — Threaded bolts | 4 — Impact extrusion |
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer