GATE2016-2-22

Arjun asked in Materials, Manufacturing and Industrial Engineering Feb 24, 2017 recategorized Mar 5, 2021 by Lakshman Patel RJIT

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The welding process which uses a blanket of fusible granular flux is

tungsten inert gas welding
submerged arc welding
electroslag welding
thermit welding

gateme-2016-set2
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
principles-of-welding

Arjun asked in Materials, Manufacturing and Industrial Engineering Feb 24, 2017 recategorized Mar 5, 2021 by Lakshman Patel RJIT

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Arjun asked in Materials, Manufacturing and Industrial Engineering Feb 24, 2017

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 asked in Materials, Manufacturing and Industrial Engineering Feb 24, 2017

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Arjun asked in Materials, Manufacturing and Industrial Engineering Feb 24, 2017

GATE2016-2-50
The Voltage-length characteristics of a direct current arc in an arc welding process is $V=(100+40l)$ ,where $l$ is the length of arc in $mm$ and $V$ is arc voltages in volts.during a welding process,the arc length varies between $1$ and $2 \: mm$ and welding current is in range $200-250 \: A$.Assuming a linear power source,the short circuit current is_____$A$

Arjun asked in Materials, Manufacturing and Industrial Engineering Feb 24, 2017

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Arjun asked in Materials, Manufacturing and Industrial Engineering Feb 24, 2017

GATE2016-2-49
Gray cast iron blocks of size $100mm\times 50mm\times 10mm$ with a central spherical cavity of diameter $4 \:mm$ are sand cast.The shrinkage allowance for the pattern is $3\%$.The ratio of the volume of the pattern to the volume of casting is

Arjun asked in Materials, Manufacturing and Industrial Engineering Feb 24, 2017

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numerical-answers
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Arjun asked in Materials, Manufacturing and Industrial Engineering Feb 9, 2019

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 asked in Materials, Manufacturing and Industrial Engineering Feb 9, 2019

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numerical-answers
materials-manufacturing-and-industrial-engineering
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principles-of-welding

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Arjun asked in Materials, Manufacturing and Industrial Engineering Feb 24, 2017

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

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GATE2016-2-22

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