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Asked: March 15, 2020In: Thermodynamics & Rate Processes

GATE MT 2012 Q8. Hot metal at 1700 K is poured in a sand mould that is open at the top. Heat loss from the liquid metal takes place by

Poll Results

17.24%(A) Radiation only ( 5 voters )
6.9%(B) Radiation and conduction only ( 2 voters )
13.79%(C) Radiation and convection only ( 4 voters )
62.07%(D) Radiation, conduction and convection ( 18 voters )
Based On 29 Votes

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Asked: April 15, 2020In: Career/ Jobs/ Exam

How to prepare for ISRO Scientist written test and interview?

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Asked: June 11, 2020In: Metal Working (Forming)

GATE MT 2019 Q25. Match the automobile components in column 1 with the corresponding manufacturing processes in column 2.

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76.36%B ( 42 voters )
14.55%C ( 8 voters )
9.09%D ( 5 voters )
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GATE MT 2019 Q25. Match the automobile components in column 1 with the corresponding manufacturing processes in column 2.
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Asked: May 23, 2020

Why we use cryolite in aluminum extraction process?

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Asked: June 17, 2020In: Uncategorised

What is the practical importance of metalliding process?

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metagate.in
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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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[Deleted User]
[Deleted User]
Asked: June 19, 2020In: Uncategorised

What is the Different between XRF/LIBS ?

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AakashSingh
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Asked: May 27, 2020In: Iron & Steel Making

Do we remove Sulphur from hot metal in Blast Furnace in industry? What we do to control sulphur in final products in industry?

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Asked: July 9, 2020In: Physical Metallurgy & Heat treatment

What is kirkendall effect?

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Jhansi Kokkiligadda
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Asked: June 12, 2020In: Numericals (All papers)

Calculate the volume change associated with the change in crystal structure.

Pure iron goes through a polymorphic change from BCC to FCC upon heating at 912°C. (a) Calculate the volume change associated with the change in crystal structure from BCC to FCC if at 912°C the BCC unit cell had a lattice ...Read more

Pure iron goes through a polymorphic change from BCC to FCC upon heating at 912°C.

(a) Calculate the volume change associated with the change in crystal structure from BCC to FCC if at 912°C the BCC unit cell had a lattice constant a = 0.293 nm and the FCC unit cell a lattice constant a’=0.363 nm. Make sure to explain clearly the different steps you have undertaken to come up with the solution.

(b) What consequences this change of volume could have? Give an example where this change of volume is important to consider.

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Asked: March 17, 2020In: Mechanical Metallurgy

GATE MT 2012 Q52. Statement for Linked Answer Questions 52 and 53: A material with grain size of ASTM No. 6 has a lattice frictional stress 100 MN/m2 and locking parameter (Hall-Petch constant) 0.10 MN/m3/2 . Grain size of the material is approximately

Poll Results

40.74%(A) 45 μm ( 11 voters )
18.52%(B) 35 μm ( 5 voters )
33.33%(C) 4.5 μm ( 9 voters )
7.41%(D) 3.5 μm ( 2 voters )
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Asked: February 25, 2022In: Thermodynamics & Rate Processes

GATE MT 2022 Q41

Assuming that Dulong-Petit law is valid for a monoatomic solid, the ratio of heat  Cp/Cv capacities  at 500 K is  _____. (round off to 3 decimals). Given:  molar volume = 7×106  m3 mol-1, isothermal compressibility = 8×1012 Pa1, isobaric expansivity = 6×105K1 ...Read more

Assuming that Dulong-Petit law is valid for a monoatomic solid, the ratio of heat

 Cp/Cv capacities  at 500 K is  _____. (round off to 3 decimals).

Given:  molar volume = 7×106  m3 mol-1, isothermal compressibility = 8×1012 Pa1, isobaric expansivity = 6×105K1 andR = 8.314 JK-1mol-1.

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