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Recent questions tagged principles-of-welding
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GATE2019 ME-2: 51
A gas tungsten arc welding operation is performed using a current of $250 \: A$ and an arc voltage of $20 \: V$ at a welding speed of $5 \: mm/s$. Assuming that the arc efficiency is $70 \%$, the net heat input per unit length of the weld will be _________$kJ/mm$ (round off to one decimal place)
Arjun
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Materials, Manufacturing and Industrial Engineering
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set2
numerical-answers
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
0
answers
0
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GATE2019 ME-1: 14
Which one of the following welding methods provides the highest heat flux $(W/mm^2)$? Oxy-acetylene gas welding Tungsten inert gas welding Plasma arc welding Laser beam welding
Arjun
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in
Materials, Manufacturing and Industrial Engineering
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
0
answers
0
votes
GATE ME 2012 | Question: 39
In a DC arc welding operation, the voltage-arc length characteristic was obtained as $V_{arc} = 20+5l$ where the arc length $l$ was varied between $5$ mm and $7$ mm. Here $V_{arc}$ denotes the arc voltage in $Volts$. The arc current was varied from $400$ A and $500$ A. ... for the welding operation are $45$ V, $450$ A $75$ V, $750$ A $95$ V, $950$ A $150$ V, $1500$ A
Andrijana3306
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Materials, Manufacturing and Industrial Engineering
Mar 20, 2018
by
Andrijana3306
1.5k
points
gateme-2012
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
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answers
0
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GATE2018-1-12
The type of weld represented by the shaded region in the figure is groove spot fillet plug
Arjun
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Materials, Manufacturing and Industrial Engineering
Feb 17, 2018
by
Arjun
27.4k
points
gateme-2018-set1
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
0
answers
0
votes
GATE2017 ME-1: 23
In an arc welding process, welding speed is doubled. Assuming all other process parameters to be constant, the cross-sectional area of the weld bead will Increase by $25\%$ Increase by $50\%$ Reduce by $25\%$ Reduce by $50\%$
Arjun
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in
Materials, Manufacturing and Industrial Engineering
Feb 27, 2017
by
Arjun
27.4k
points
gateme-2017-set1
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
0
answers
0
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GATE2016-2-22
The welding process which uses a blanket of fusible granular flux is tungsten inert gas welding submerged arc welding electroslag welding thermit welding
Arjun
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Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
by
Arjun
27.4k
points
gateme-2016-set2
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
0
answers
0
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GATE2016-1-21
Under optimal conditions of the process the temperatures experienced by a copper work piece in fusion welding, brazing and soldering are such that $T_{\text{welding}} > T_{\text{soldering}}> T_{\text{brazing}}$ ... $T_{\text{welding}} > T_{\text{brazing}} > T_{\text{soldering}}$
Arjun
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in
Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
by
Arjun
27.4k
points
gateme-2016-set1
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
0
answers
0
votes
GATE2015-3-21
Which two of the following joining processes are autogeneous? Diffusion welding Electroslag welding Tungsten inert gas welding Friction welding (i) and (iv) (ii) and (iii) (ii) and (iv) (i) and (iii)
Arjun
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Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
by
Arjun
27.4k
points
gateme-2015-set3
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
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answers
0
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GATE2015-2-51
During a TIG welding process, the arc current and arc voltage were $50$ $A$ and $60$ $V$, respectively, when the welding speed was $150$ $mm/min$. In another process, the TIG welding is carried out at a welding speed of $120$ $mm/min$ at the same arc voltage and ... so that weld quality remains the same. The welding current (in $A$) for this process is $40.00$ $44.72$ $55.90$ $62.25$
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
by
Arjun
27.4k
points
gateme-2015-set2
principles-of-welding
casting-forming-and-joining-process
materials-manufacturing-and-industrial-engineering
0
answers
0
votes
GATE2015-1-31
A DC welding power source has a linear voltage-current ($V$-$I$) characteristic with open circuit voltage of $80$ $V$ and a short circuit current of $300$ $A$. For maximum arc power, the current (in Amperes) should be set as_________
Arjun
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Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
by
Arjun
27.4k
points
gateme-2015-set1
numerical-answers
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
0
answers
0
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GATE2015-1-24
In a linear arc welding process, the heat input per unit length is inversely proportional to welding current welding voltage welding speed duty cycle of the power source
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
by
Arjun
27.4k
points
gateme-2015-set1
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
0
answers
0
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GATE Mechanical 2014 Set 4 | Question: 20
Within the Heat Affected Zone (HAZ) in a fusion welding process, the work material undergoes microstructural changes but does not melt neither melting nor microstructural changes both melting and microstructural changes after solidification melting and retains the original microstructure after solidification
Arjun
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Materials, Manufacturing and Industrial Engineering
Feb 19, 2017
by
Arjun
27.4k
points
gateme-2014-set4
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
0
answers
0
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GATE ME 2013 | Question: 11
Match the CORRECT pairs: ... $P-4; Q-2; R-3; S-1$ $P-2; Q-3; R-4; S-1$ $P-2; Q-4; R-1; S-3$
piyag476
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Materials, Manufacturing and Industrial Engineering
Feb 19, 2017
by
piyag476
1.4k
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gateme-2013
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding
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