Metallurgical Engineering
GATE MT Powder metallurgy PYQs
Build your understanding with focused practice from past exam papers.
How to practice Powder metallurgy
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 1–7 of 7. Imported answers require independent review unless marked reviewed.
Question 27
Open questionMTMCQ1 markNeeds review
Which one of the following processes is NOT involved in the sintering of a green compact of ceramic powders? Assume that sintering is performed without application of external pressure.
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Match the components in Column I with corresponding manufacturing processes in Column II.
Column I
(P) Crank shaft
(Q) Machine bed
(R) Automobile brake pad
(S) Beverage can
Column II
(1) Sheet metal forming
(2) Forging
(3) Casting
(4) Powder metallurgy
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Match the products in Column I with the manufacturing processes in Column II.
Column I
(P) Blades of a gas turbine
(Q) Seamless tubing
(R) Automotive cylinder blocks
(S) Tungsten filament
Column II
Sand casting
Extrusion
Powder metallurgy and wire drawing
Investment casting
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Match the automobile components in Column I with the corresponding manufacturing process in Column II.
Column I: Automobile components
(P) Engine block
(Q) Brake pad
(R) Connecting rod
(S) Door panel
Column II: Manufacturing process
Forging
Sheet metal forming
Casting
Powder metallurgy
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 8
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Consider the following engineering components:
P. Gas turbine blades
Q. Tungsten-based heavy alloy penetrators
R. Self-lubricating bearings
S. Engine block of an automobile
Which of the following two components are produced by powder metallurgy?
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Tungsten powder is pressed at 150 MPa to a green density of 55%. After sintering, the compact attains 86.5% of its theoretical density. Assuming uniform shrinkage, the linear shrinkage (in %) is __________ (answer up to two decimal places)
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 55
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W-Ni compact is prepared by liquid phase sintering at 1500°C. If the size of tungsten grains is 40 μm and the interfacial tungsten-tungsten and tungsten-nickel energies are 0.52 and 0.30 J.m⁻² respectively, the predicted average neck size (in μm) of sintered tungsten grain is:
(Melting points of tungsten and nickel are 3410°C and 1453°C, respectively)
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