1
GATE PI 2003
MCQ (Single Correct Answer)
+2
-0.6
A $$900$$ $$mm$$ long steel plate is welded by manual metal arc welding process using welding current of $$150$$ $$A,$$ arc voltage of $$20$$ $$V$$ and welding speed of $$300$$ $$mm/min.$$ If the process efficiency of is $$0.8$$ and surface resistance is $$36$$ micro-ohm, the heat input will be
A
$$600$$ $$J/mm$$
B
$$480$$ $$J/min$$
C
$$146$$ $$kJ$$
D
$$116$$ $$kJ$$
2
GATE PI 2003
MCQ (Single Correct Answer)
+2
-0.6
The cold cracking susceptibility of the heat affected zone in an arc weld is influenced by
$$P.$$ Entraped hydrogen,
$$Q.$$ Residual stresses
$$R.$$ Marternsitic transformation
$$S.$$ Slag inclusion
A
$$P,S$$
B
$$P,Q,S$$
C
$$P, Q, R$$
D
$$R,S$$
3
GATE PI 2003
MCQ (Single Correct Answer)
+2
-0.6
Which of the following process can be used for welding of Aluminium alloys
$$P.$$ Submerged arc welding
$$Q.$$ Gas metal arc welding
$$R.$$ Electroslag welding
$$S.$$ Gas tungsten arc welding
A
$$P,Q$$
B
$$Q,S$$
C
$$Q,R$$
D
$$R,S$$
4
GATE PI 2003
MCQ (Single Correct Answer)
+2
-0.6
Match List - I (welding defects) with List - II (causes) and select the correct answer using the codes given below the lists GATE PI 2003 Joining of Materials - Welding Question 30 English
A
$$A - 4,\,\,B - 2,\,\,C - 3,\,\,D - 1$$
B
$$A - 4,\,\,B - 2,\,\,C - 1,\,\,D - 3$$
C
$$A - 2,\,\,B - 4,\,\,C - 1,\,\,D - 3$$
D
$$A - 2,\,\,B - 4,\,\,C - 3,\,\,D - 1$$
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