2024 question paper
Engineering Materials
26 questions
Q1a. Choose the correct option: The BCC structure of Fe-C solid solution is known as (i) Ferrite (ii) Pearlite (iii) Cementite (iv) Austenite20242m
Module 2: Alloys and Phase Diagrams
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The BCC structure of Fe-C solid solution is known as
(i) Ferrite
(ii) Pearlite
(iii) Cementite
(iv) AusteniteQ1b. Choose the correct option: The ability of a material to resist plastic deformation is known as (i) Tensile Strength (ii) Modulus of Elasticity (iii) Yield Strength (iv) Impact Strength20242m
Module 3: Mechanical Property Measurement
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The ability of a material to resist plastic deformation is known as
(i) Tensile Strength
(ii) Modulus of Elasticity
(iii) Yield Strength
(iv) Impact StrengthQ1c. Choose the correct option: A solid phase results in a solid plus another solid phase on cooling during (i) Eutectoid reaction (ii) Eutectic reaction (iii) Peritectoid reaction (iv) Peritectic reaction20242m
Module 2: Alloys and Phase Diagrams
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A solid phase results in a solid plus another solid phase on cooling during
(i) Eutectoid reaction
(ii) Eutectic reaction
(iii) Peritectoid reaction
(iv) Peritectic reactionQ1d. Choose the correct option: A family of directions is represented by (i) (hkl) (ii) {hkl} (iii) <uvw> (iv) [uvw]20242m
Module 1: Crystal Structure
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A family of directions is represented by
(i) (hkl)
(ii) {hkl}
(iii) <uvw>
(iv) [uvw]Q1e. Choose the correct option: According to Hume Rothery's rule, size of atoms must not differ by more than (i) 5% (ii) 35% (iii) 15% (iv) 55%20242m
Module 2: Alloys and Phase Diagrams
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According to Hume Rothery's rule, size of atoms must not differ by more than
(i) 5%
(ii) 35%
(iii) 15%
(iv) 55%Q1f. Choose the correct option: Which of the following is the hardest? (i) Austenite (ii) Bainite (iii) Pearlite (iv) Martensite20242m
Module 4: Heat Treatment of Steel
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Which of the following is the hardest?
(i) Austenite
(ii) Bainite
(iii) Pearlite
(iv) MartensiteQ1g. Choose the correct option: Carbon and Nitrogen are introduced into the surface of steel during (i) Normalizing (ii) Cyaniding (iii) Hardening (iv) Tempering20242m
Module 4: Heat Treatment of Steel
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Carbon and Nitrogen are introduced into the surface of steel during
(i) Normalizing
(ii) Cyaniding
(iii) Hardening
(iv) TemperingQ1h. Choose the correct option: Elements common in Brass and Bronze is (i) Aluminium (ii) Copper (iii) Gold (iv) Zinc20242m
Module 5: Alloying of Steel
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Elements common in Brass and Bronze is
(i) Aluminium
(ii) Copper
(iii) Gold
(iv) ZincQ1i. Choose the correct option: On a two-component solid-liquid phase diagram, a tie line indicates the region where (i) temperature is constant (ii) only the solid phase exists (iii) composition is constant (iv) only the liquid phase exists20242m
Module 2: Alloys and Phase Diagrams
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On a two-component solid-liquid phase diagram, a tie line indicates the region where
(i) temperature is constant
(ii) only the solid phase exists
(iii) composition is constant
(iv) only the liquid phase existsQ1j. Choose the correct option: Gibbs phase rule for general system (i) P + F = C - 1 (ii) P + F = C - 2 (iii) P + F = C + 1 (iv) P + F = C + 220242m
Module 2: Alloys and Phase Diagrams
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Gibbs phase rule for general system
(i) P + F = C - 1
(ii) P + F = C - 2
(iii) P + F = C + 1
(iv) P + F = C + 2Q2a. Define solid solution. Distinguish between substitutional and interstitial solid solutions.20247m
Module 2: Alloys and Phase Diagrams
View this question on its own page →Define solid solution. Distinguish between substitutional and interstitial solid solutions.
Q2b. Deduce the packing fraction of BCC and FCC crystal structure with a neat sketch.20247m
Module 1: Crystal Structure
View this question on its own page →Deduce the packing fraction of BCC and FCC crystal structure with a neat sketch.
Q3a. Sketch iron-carbon equilibrium diagram and show the salient points.20246m
Module 2: Alloys and Phase Diagrams
View this question on its own page →Sketch iron-carbon equilibrium diagram and show the salient points.
Q3b. What is steel? Distinguish between hypoeutectoid and hypereutectoid steels.20248m
Module 2: Alloys and Phase Diagrams
View this question on its own page →What is steel? Distinguish between hypoeutectoid and hypereutectoid steels.
Q4a. Name the important heat treatment processes of steel. Explain any two of them with neat sketches.20246m
Module 4: Heat Treatment of Steel
View this question on its own page →Name the important heat treatment processes of steel. Explain any two of them with neat sketches.
Q4b. Describe the factors promoting grain size of steel. What are the effects of grain size on mechanical properties?20248m
Module 4: Heat Treatment of Steel
View this question on its own page →Describe the factors promoting grain size of steel. What are the effects of grain size on mechanical properties?
Q5a. Explain the Rockwell hardness test and compare B-scale with C-scale.20246m
Module 3: Mechanical Property Measurement
View this question on its own page →Explain the Rockwell hardness test and compare B-scale with C-scale.
Q5b. Explain the difference between toughness and brittleness.20248m
Module 3: Mechanical Property Measurement
View this question on its own page →Explain the difference between toughness and brittleness.
Q6a. Write the composition, properties and applications of: (i) grey cast iron and (ii) white cast iron.20247m
Module 5: Alloying of Steel
View this question on its own page →Write the composition, properties and applications of:
(i) grey cast iron and
(ii) white cast iron.Q6b. Explain ultrasonic testing with a neat sketch.20247m
Module 3: Mechanical Property Measurement
View this question on its own page →Explain ultrasonic testing with a neat sketch.
Q7. Discuss the method of getting a mixture of Pearlite, Bainite & Martensite steel with a neat TTT diagram.202414m
Module 4: Heat Treatment of Steel
View this question on its own page →Discuss the method of getting a mixture of Pearlite, Bainite & Martensite steel with a neat TTT diagram.
Q8. A 65wt% Ni - 35wt% Cu alloy is heated to a temperature within the \alpha + liquid phase region. If the composition of the \alpha phase is 70wt% Ni, Determine: (a) The temperature of the alloy (b) Composition of liquid phase (c) The mass fraction of both phases202414m
Module 2: Alloys and Phase Diagrams
View this question on its own page →A 65wt% Ni - 35wt% Cu alloy is heated to a temperature within the + liquid phase region. If the composition of the phase is 70wt% Ni, Determine:
(a) The temperature of the alloy
(b) Composition of liquid phase
(c) The mass fraction of both phasesQ9a. Explain the following: Case Hardening20243.5m
Module 4: Heat Treatment of Steel
View this question on its own page →Explain the following: Case Hardening
Q9b. Explain the following: Space Lattice20243.5m
Module 1: Crystal Structure
View this question on its own page →Explain the following: Space Lattice
Q9c. Explain the following: Creep20243.5m
Module 3: Mechanical Property Measurement
View this question on its own page →Explain the following: Creep
Q9d. Explain the following: Super Alloys20243.5m