Foundry Metallurgy MCQ Questions and Answers

Foundry Metallurgy MCQ Questions and Answers | Metallurgical Engineering

Enhance your knowledge of Foundry Metallurgy with this comprehensive collection of MCQ questions and answers. These MCQ questions and answers in Foundry Metallurgy are specifically designed for students of Metallurgical Engineering who are preparing for the GATE Exam. Strengthen your preparation and excel in your studies with this valuable resource. Page-6 section-1

For casting a cylindrical aluminum bloom having a length of 1000 mm and diameter of 700 mm. the approximate solidification time (in minutes) estimated using Chvorinov's rule is

A) 45 B) 316 C) 440 D) 620

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Answer & Solution

Answer: Option D

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The shrinkage allowance for zinc is . . . . . . . . mm.

A) 17 B) 24 C) 20.8 D) 12.5 - 15

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Answer & Solution

Answer: Option B

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Riser is not required for the casting of

A) grey cast iron B) white cast iron C) Al- 4% Cu D) Al-12% Si

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Answer & Solution

Answer: Option A

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Assertion 'a': During casting of aluminium, grain refinement can be achieved by addition of certain alloying elements.
Reason 'r': The addition of the alloying elements may result in the formation of deoxidation products or intermetallic compounds which may act as nucleation sites for grain refinement.

A) Both 'a' and 'r' are true, but 'r' is not the reason for 'a' B) Both 'a' and 'r' are true and 'r' is the reason for 'a' C) 'a' is true but 'r' is false D) 'a' is false but 'r' is true

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Answer & Solution

Answer: Option A

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In foundary practice, the fluidity of an alloy does not increase with increasing

A) superheat B) channel size C) flow velocity D) heat transfer coefficient

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Answer & Solution

Answer: Option B

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Fly wheels, track wheels and gears can be produced by

A) true centrifugal casting B) semi centrifugal casting C) centrifuged casting D) none of the above

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Answer & Solution

Answer: Option B

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In a casting, cold shut defect is caused by

A) low pouring temperature B) melt-mould reaction C) faulty gating system D) very low mould permeability

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Answer & Solution

Answer: Option A

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For designing a pressurised gating system in sand casting, the gating ratio should be

A) 1 : 0.75 : 0.50 B) 1 : 1 : 1 C) 1 : 2 : 4 D) 1 : 3 : 3

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Answer & Solution

Answer: Option A

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. . . . . . . . is the strength of the sand (of mold cavity) above 100°C

A) Hot strength B) Green strength C) Dry strength D) None of these

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Answer & Solution

Answer: Option A

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Eutectic Al-Si castings are modified by

A) Na B) P C) S D) none of these

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Answer & Solution

Answer: Option A

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