GATE MT topic:metal-cast PYQs & Answers — Page 2

Questions 11–16 of 16. Imported answers require independent review unless marked reviewed.

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

Your answerChoose one option.

P-1, Q-2, R-3, S-4

P-3, Q-4, R-1, S-2

P-3, Q-2, R-4, S-1

P-4, Q-1, R-3, S-2

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In sand-mold casting of a metal, it takes 180 seconds to complete solidification of a 27 cm

cube-shaped casting. All other parameters remaining constant, the total solidification time (in seconds, rounded off to one decimal place) for a cylinder-shaped [radius = 1 cm and height = 6 cm] casting of the same metal, is ________.

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Arrange the following processes in INCREASING magnitude of surface roughness of the cast.

P. Investment casting Q. Permanent mold casting R. Pressure die casting S. Sand casting

Your answerChoose one option.

R < S < Q < P

P < S < Q < R

R < P < Q < S

Q < P < R < S

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As shown in schematic below, an alloy is cast as a rectangular slab between two thick mould walls that differ in their thermal conductivities. Shrinkage defects are found at a distance L1 from Mould-1 with thermal conductivity

and distance L2 from Mould-2 with thermal conductivity

. If the ratio L1:L2 = 3:2, and assuming 1-D heat transfer, the ratio

is ______ (to two decimal places)

Diagram for Metallurgical Engineering question 43

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Which one of the following manufacturing techniques is used for making window glass?

Your answerChoose one option.

Investment casting

Patenting

Spray forming

Float-bath method

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Total time for solidification of a cubic casting of dimensions 5.0 cm × 5.0 cm × 5.0 cm is 1.6 min. A cylindrical riser with diameter to height ratio 0.5 is required so that the time for solidification of riser is 3.2 min. Applying Chvorinov’s rule, the height of the riser (in cm) is ________ (answer up to two decimal places)

(Assume that exponent (n) in Chvorinov’s equation is 2)

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GATE MT topic:metal-cast PYQs

Question 34

Question 52

Question 17

Question 43

Question 24

Question 53