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BARC Metallurgy Interview Question & Answer for practice for OCES/DGFS Exams.

Askmemetallurgy Latest Questions

metagate.in
metagate.inPlatinum
Asked: May 3, 2020In: Thermodynamics & Rate Processes

BARC-16: Using Gibb’s Phase rule for a Binary Eutectic alloy, the maximum number of Phases that can co-exist at equilibrium are 4 (F=0, P = C+2 = 4). Then at the Eutetic point there should be 4 phases but we find only 3? Explain

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BARC-16: Using Gibb’s Phase rule for a Binary Eutectic alloy, the maximum number of Phases that can co-exist at equilibrium are 4 (F=0, P = C+2 = 4). Then at the Eutetic point there should be 4 phases but we find only 3? Explain
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metagate.in
metagate.inPlatinum
Asked: April 23, 2020In: Physical Metallurgy & Heat treatment

BARC-15: What is the maximum number of phases that can co-exist in a Binary Phase Diagram?

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Answer
metagate.in
metagate.inPlatinum
Asked: April 23, 2020In: Physical Metallurgy & Heat treatment

BARC-14: What is the effect of grain size on the TTT Curves of Eutectoid Steel?

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BARC-14: What is the effect of grain size on the TTT Curves of Eutectoid Steel?
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Answer
metagate.in
metagate.inPlatinum
Asked: April 23, 2020In: Thermodynamics & Rate Processes

BARC-13: What is the physical significance of Gibbs-Duhem Equation?

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metagate.in
metagate.inPlatinum
Asked: April 21, 2020In: Physical Metallurgy & Heat treatment

BARC-12: Most alloying elements increase the Hardenability of Steel except Cobalt. Why does Cobalt behave differently?

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  • 520
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Answer
metagate.in
metagate.inPlatinum
Asked: April 21, 2020In: Physical Metallurgy & Heat treatment

BARC-11: Why Diamond Cubic & HCP are not a part of the 14 Bravais Lattices

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metagate.in
metagate.inPlatinum
Asked: April 19, 2020In: Thermodynamics & Rate Processes

BARC-10: Is the diffusivity Equation D = D0 Exp(-Q/RT) applicable to liquids & Gases also or is only limited to Solids?

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BARC-10: Is the diffusivity Equation D = D0 Exp(-Q/RT) applicable to liquids & Gases also or is only limited to Solids?
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  • 513
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Answer
metagate.in
metagate.inPlatinum
Asked: April 19, 2020In: Physical Metallurgy & Heat treatment

BARC-9: Why Pure Metals solidfy at a fixed temperature while Alloys solidfy over a range of temperatures?

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BARC-9: Why Pure Metals solidfy at a fixed temperature while Alloys solidfy over a range of temperatures?
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Answer
metagate.in
metagate.inPlatinum
Asked: April 19, 2020In: Physical Metallurgy & Heat treatment

BARC-8: Draw the Cooling Curve of a Hypereutectic alloy cooled slowly from liquid to solid state

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metagate.in
metagate.inPlatinum
Asked: April 19, 2020In: Physical Metallurgy & Heat treatment

BARC-7: Why do the Cooling Curves of Eutectic alloy and pure metal look similar despite Eutectic being an alloy?

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BARC-7: Why do the Cooling Curves of Eutectic alloy and pure metal look similar despite Eutectic being an alloy?
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  • 559
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Answer
metagate.in
metagate.inPlatinum
Asked: April 16, 2020In: Iron & Steel Making

BARC-6: Why Vacuum is used in Secondary Steelmaking? Explain using Thermodynamics?

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BARC-6: Why Vacuum is used in Secondary Steelmaking? Explain using Thermodynamics?
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  • 1,109
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Answer
metagate.in
metagate.inPlatinum
Asked: April 16, 2020In: Physical Metallurgy & Heat treatment

BARC-5: Draw a Phase Diagram for Binary System in which the metals are insoluable both in liquid and Solid States

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  • 623
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Answer
metagate.in
metagate.inPlatinum
Asked: April 16, 2020In: Physical Metallurgy & Heat treatment

BARC-4: Why is the TTT Curve in C-Shape ? And why is the lower portion of CCT curve not represented?

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BARC-4: Why is the TTT Curve in C-Shape ? And why is the lower portion of CCT curve not represented?
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  • 2,478
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Answer
metagate.in
metagate.inPlatinum
Asked: April 16, 2020In: Thermodynamics & Rate Processes

Continuing from previous Question’s concpet, BARC-3: Draw the Free Energy Vs. Temperature curve for Pure Iron at constant Pressure

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Continuing from previous Question’s concpet, BARC-3: Draw the Free Energy Vs. Temperature curve for Pure Iron at constant Pressure
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Answer
metagate.in
metagate.inPlatinum
Asked: April 14, 2020In: Physical Metallurgy & Heat treatment

BARC-2: Solid Aluminium has FCC Structure. It is melted to liquid (which is no crystal structure) and again cooled down slowly. How does Aluminium know that it has to solidify again as FCC? Why does it not solidify as BCC ?

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BARC-2: Solid Aluminium has FCC Structure. It is melted to liquid (which is no crystal structure) and again cooled down slowly. How does Aluminium know that it has to solidify again as FCC? Why does it not solidify as BCC ?
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  • 16
  • 1,347
  • 1
Answer
metagate.in
metagate.inPlatinum
Asked: April 14, 2020In: Physical Metallurgy & Heat treatment

BARC-1: In a Eutectic Phase Diagram, Lever Rule can be applied just above Eutectic Temp or Just below. But not at the Eutectic Temp. What is the Reason?

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