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Askmemetallurgy Official
Askmemetallurgy Official
Asked: February 25, 2022In: Welding Technology

GATE MT 2022 Q43

Steel plates are welded autogenously using Gas Tungsten Arc welding with an  arc heat transfer efficiency of 0.65. The first weld is made using a welding current of 200 A at an arc voltage of 18 V with a welding ...Read more

Steel plates are welded autogenously using Gas Tungsten Arc welding with an  arc heat transfer efficiency of 0.65. The first weld is made using a welding current of 200 A at an arc voltage of 18 V with a welding speed of 0.002 ms–1.

The second weld is made at a welding speed of 0.0022 ms–1 with the same arc voltage. If both the welds have identical heat input, the welding current of the second weld is _____ A (round off to the nearest integer).

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: February 25, 2022In: Welding Technology

GATE MT 2022 Q28. Which of the following parameter(s) influence(s) the melting rate of the consumable wire in a gas metal arc welding process?

Poll Results

4.76% (A) Stick-out length ( 1 voter )
23.81% (B) Welding speed ( 5 voters )
57.14% (C) Welding current ( 12 voters )
14.29% (D) Diameter of the consumable wire ( 3 voters )
Based On 21 Votes

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Answer
Askmemetallurgy Official
Askmemetallurgy Official
Asked: February 25, 2022In: Welding Technology

GATE MT 2022 Q10. Which one of the following figures illustrates a lap joint with fillet weld?

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2022 10
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Answer
Ashish lisu
Ashish lisuIron
Asked: July 8, 2021In: Welding Technology

what is the difference between TIG and other welding process and in which process heat loss will be more and why? which welding process is suitable for thin sheets welding?

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Answer
Ashish lisu
Ashish lisuIron
Asked: July 8, 2021In: Welding Technology

In arc welding how heat is transferred to the metal piece?

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Answer
Ashish lisu
Ashish lisuIron
Asked: July 8, 2021In: Welding Technology

how different type of residual stress generates during different welding thermal cycle? how different type of residual stress generates during rolling process?

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Answer
[Deleted User]
[Deleted User]
Asked: June 25, 2021In: Welding Technology

What is the effect of Cr content of SA350 Gr. LF2 forged hollows during welding (SAW)?

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Answer
[Deleted User]
[Deleted User]
Asked: June 25, 2021In: Welding Technology

What is the effect of Chromium content of SA 350 grade LF2 forged hollows during welding? (SAW) hollows

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Answer
Ashish kumar pradhan
Ashish kumar pradhan
Asked: June 20, 2021In: Welding Technology

what is the role of hydrogen in hydrogen welding?

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Answer
Jayaprakash.p
Jayaprakash.p
Asked: June 19, 2021In: Welding Technology

why TIG welding can be done in all welding positions?

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Answer
Riya Roy
Riya RoyIron
Asked: April 4, 2021In: Welding Technology

What is HAZ in welding?

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: March 31, 2021In: Welding Technology

GATE MT 2021 Q40. A continuous fillet weld is made using a 3000 W welding machine. At a travel speed of 6 mm s-1, the cross-sectional area (in mm2) of the weld is: (round off to nearest integer). Given: The unit energy required to melt the metal is 6 J mm-3.Heat transfer factor = 0.6 Melting factor = 0.5

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Answer
hemanthm806@gmail.com
[email protected]Copper
Asked: July 8, 2020In: Welding Technology

What type of microstructure is seen at the interface of metal and wall after casting and also welding?

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Arun C
Arun CIron
Asked: July 7, 2020In: Welding Technology

anyone can explain how the hydrogen embrittlement occurs in low carbon steel during welding?

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: June 25, 2020In: Welding Technology

GATE MT 2018 Q45

The temperature profile (T in Kelvin) of an arc weld across its width is given as𝑇 = 2000 exp(−0.3𝑥2) where 𝑥 (in mm) is the distance from the weld centre. The melting point of the base material is 1500 K. ...Read more

The temperature profile (T in Kelvin) of an arc weld across its width is given as𝑇 = 2000 exp(−0.3𝑥2) where 𝑥 (in mm) is the distance from the weld centre. The melting point of the base material is 1500 K. The width of the fusion zone is  _________(in mm tO two decimal places).

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: June 20, 2020In: Welding Technology

GATE MT 2018 Q16. Which of the following categories of materials is suitable as a filler for brazing of steel sheets?

Poll Results

12.16%(A)Epoxy resins ( 9 voters )
66.22%(B) Near-eutectic alloys ( 49 voters )
14.86%(C) Refractory alloys ( 11 voters )
6.76%(D) Large freezing range alloys ( 5 voters )
Based On 74 Votes

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: June 19, 2020In: Welding Technology

GATE MT 2018 Q14.Which of the following welding processes is NOT suitable for joining thin metal sheets?

Poll Results

18.8%(A)Gas Metal Arc Welding ( 22 voters )
57.26%(B)Electro Slag Welding ( 67 voters )
12.82%(C)Electron Beam Welding ( 15 voters )
11.11%(D)Laser Beam Welding ( 13 voters )
Based On 117 Votes

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: June 11, 2020In: Welding Technology

GATE MT 2019 Q24. An arc welding is performed at 400 Amperes, 20 V at a transverse speed of 5 mm/s. If the heat transfer efficiency is 0.6, the energy input per unit length( in J/mm, rounded off to the nearest integer ) during the process is ___________.

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: June 8, 2020In: Welding Technology

GATE MT 2019 Q10. Two blocks of same metal are to be welded. The configuration that will undergo least deformation after welding is :

Poll Results

9.26%A ( 5 voters )
14.81%B ( 8 voters )
29.63%C ( 16 voters )
46.3%D ( 25 voters )
Based On 54 Votes

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GATE MT 2019 Q10. Two blocks of same metal are to be welded. The configuration that will undergo least deformation after welding is :
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Answer
Shetty
ShettyGold
Asked: May 23, 2020In: Welding Technology

Which welding process has highest temperature gradient?

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: May 10, 2020In: Welding Technology

GATE MT 2020 Q29. Two plates of composition. Fc—lo wt.% Ni and Fe – 20 wt.% Cr – 5 wt.% Ni are Fusion-welded using a filler rod of composition 20 wt, % Ni – 80 wt.% Cr. Contribution to dilution of the weld pool is 20% from each plate. The Ni content in the weld pool is (round off to the nearest integer).

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GATE MT 2020 Q29. Two plates of composition. Fc—lo wt.% Ni and Fe – 20 wt.% Cr – 5 wt.% Ni are Fusion-welded using a filler rod of composition 20 wt, % Ni – 80 wt.% Cr. Contribution to dilution of the weld pool is 20% from each plate. The Ni content in the weld pool is (round off to the nearest integer).
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Answer
AakashSingh
Poll
AakashSinghCopper
Asked: May 2, 2020In: Welding Technology

Two blocks of same metal are to be welded. The configuration that will undergo the least distortion after welding is….

Poll Results

16.07%A ( 9 voters )
12.5%B ( 7 voters )
26.79%C ( 15 voters )
44.64%D ( 25 voters )
Based On 56 Votes

Participate in Poll, Choose Your Answer.

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Two blocks of same metal are to be welded. The configuration that will undergo the least distortion after welding is….
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Answer
Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: April 9, 2020In: Welding Technology

GATE MT 2016 Q21. Of the following welding processes [P] Laser Beam Welding [Q] Submerged Arc Welding [R] Metal Inert Gas Welding the width of the heat-affected zone in decreasing order is

Poll Results

11.76%(A) P > Q > R ( 10 voters )
63.53%(B) Q > R > P ( 54 voters )
11.76%(C) R > P > Q ( 10 voters )
12.94%(D) P > R > Q ( 11 voters )
Based On 85 Votes

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Answer
Santosh Prakash
Santosh PrakashIron
Asked: April 8, 2020In: Welding Technology

During welding overmatched electrodes are used for SMAW welding. These are due to losses during welding. Can someone how one can reduce the overmatch in SMAW welding

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: April 4, 2020In: Welding Technology

GATE MT 2015 Q56. Determine the correctness or otherwise of the following assertion [a]and reason[R] Assertion: In a pure metal weld, elastic modulus in heat affected zone (HAZ) is the same as that in the base metal. Reason: Coarse grained microstructrue in the HAZ results in lower hardenss.

Poll Results

9.09%(A) Both [a] and [r] are true and [r] is the correct reason of [a]. ( 3 voters )
72.73%(B) Both [a] and [r] are true and [r] is not the correct reason of [a]. ( 24 voters )
15.15%(c) Both [a] and [r] are false. ( 5 voters )
3.03%(D) [a] is true but [r] is false. ( 1 voter )
Based On 33 Votes

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