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GATE2015-1-31
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
recategorized
Mar 4, 2021
by
Lakshman Patel RJIT
0
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0
votes
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_________
gateme-2015-set1
numerical-answers
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 4, 2021
by
Lakshman Patel RJIT
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Arjun
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Feb 24, 2017
GATE2015-1-24
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Arjun
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Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
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Arjun
asked
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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
by
Arjun
27.4k
points
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Arjun
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Feb 24, 2017
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
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
by
Arjun
27.4k
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casting-forming-and-joining-process
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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
by
Arjun
27.4k
points
gateme-2015-set2
principles-of-welding
casting-forming-and-joining-process
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Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 24, 2017
GATE2015-1-36
The solidification time of a casting is proportional to $\left( \dfrac{V}{A} \right )^2$, where $V$ is the volume of the casting and $A$ is the total casting surface area losing heat. Two cubes of same material and size are cast using sand casting process. The top face of one of ... insulated to that of the other cube is $\dfrac{25}{36} \\$ $\dfrac{36}{25} \\$ $1 \\$ $\dfrac{6}{5}$
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
different-types-of-casting
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