1
GATE ME 2017 Set 1
MCQ (Single Correct Answer)
+1
-0.3
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
A
increase by $$20\% $$
B
increase by $$50\% $$
C
reduce by $$25\% $$
D
reduce by $$50\% $$
2
GATE ME 2016 Set 1
MCQ (Single Correct Answer)
+1
-0.3
Under optimal conditions of the process the temperatures experienced by a copper work piece in fusion welding, brazing and soldering are such that
A
$${T_{welding}}\, > \,{T_{soldering}}\, > \,{T_{brazing}}$$
B
$${T_{soldering}}\, > \,{T_{welding}}\, > \,{T_{brazing}}$$
C
$${T_{brazing}}\, > \,{T_{welding}}\, > \,{T_{soldering}}$$
D
$${T_{welding}}\, > \,{T_{brazing}}\, > \,{T_{soldering}}$$
3
GATE ME 2015 Set 3
MCQ (Single Correct Answer)
+1
-0.3
Which two of the following joining processes are autogeneous?
$$(i)$$ Diffusion welding
$$(ii)$$ Electro slag welding
$$(iii)$$ Tungsten inert gas welding
$$(iv)$$ Friction welding
A
$$(i)$$ and $$(iv)$$
B
$$(ii)$$ and $$(iii)$$
C
$$(ii)$$ and $$(iv)$$
D
$$(i)$$ and $$(iii)$$
4
GATE ME 2015 Set 1
MCQ (Single Correct Answer)
+1
-0.3
In a linear arc welding process, the heat input per unit length is inversely proportional to
A
welding current
B
welding voltage
C
welding speed
D
duty cycle of the power source
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