Welding Quiz | Welding Multiple Choice Questions and Answers

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Questions
1 Forge welding is best suited for.......
A Stainless steel
B High carbon steel
C Cast iron
D Wrought iron

Answer: Wrought iron
2 In arc welding, temperature of the following order may be granted......
A 1000oC
B 1500oC
C 5500oC
D 8000oC

Answer: 5500oC
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3 Which of the following is strongest for brazing joints.......
A Butt
B Scarf (inclined)
C Lap
D All are equally strong

Answer: Lap
4 Equipment is used for arc welding a material by carbon electrode.......
A A.C. welding set
B Rectifier
C Motor generator
D D.C. welding set with straight polarity

Answer: D.C. welding set with straight polarity
5 In reverse polarity welding.......
A Electrode holder is connected to the negative and work to positive
B Electrode holder is connected to the positive and work to negative
C Work is positive and holder is earthed
D Holder is positive and work is earthed

Answer: Electrode holder is connected to the positive and work to negative
6 In MIG welding, the metal is transferred in the form of.......
A A fine spray of metal
B Molten drops
C Weld pool
D Molecules

Answer: A fine spray of metal
7 Distortion in welding occures due to......
A Use of excessive current
B Improper clamping methods
C Use of wrong electrodes
D Oxidation of weld pool

Answer: Improper clamping methods
8 In inter gas arc welding following is used for welding alluminium.......
A No-combustible electrode in combination with helium and d.c. current
B Combustible electrodes and argon in combination with a.c. current
C Straight polarity d.c. current
D Carbon dioxide, because of its excellent penetration and high speed

Answer: Combustible electrodes and argon in combination with a.c. current
9 In inter gas arc welding following is used for welding magnesium.......
A No-combustible electrode in combination with helium and d.c. current
B Combustible electrodes and argon in combination with a.c. current
C Straight polarity d.c. current
D Carbon dioxide, because of its excellent penetration and high speed

Answer: No-combustible electrode in combination with helium and d.c. current
10 Carbon arc welding is.......
A A process which uses a mixture of iron oxide and granular aluminium
B Accomplished by maintaining a hot molten metal pool between plates
C Used to weld carbon rods
D None of the above

Answer: None of the above
11 Thermit welding.......
A A process which uses a mixture of iron oxide and granular aluminium
B Accomplished by maintaining a hot molten metal pool between plates
C A process in which arc is maintained under blanket of flux
D In no welding process

Answer: A process which uses a mixture of iron oxide and granular aluminium
12 The most commonly used flame in gas welding is......
A Neutral
B Oxidising
C Carburising
D All of the above

Answer: Neutral
13 Arc-welding uses following electric supply .........
A A.C.
B D.C.
C Both AC and DC
D Spiral waveform

Answer: Both AC and DC
14 The electroslag welding is.......
A A process which uses a mixture of iron oxide and granular aluminium
B Accomplished by maintaining a hot molten metal pool between plates
C A process in which arc is maintained under a blanket of flux
D There is nothing called electroslag

Answer: Accomplished by maintaining a hot molten metal pool between plates
15 Submerged arc welding is.......
A A process which uses a mixture of iron oxide and granular aluminium
B Accomplished by maintaining a hot molten metal pool between plates
C A process in which arc is maintained under a blanket of flux
D All of the above

Answer: A process in which arc is maintained under a blanket of flux
16 TIG welding is best suited for welding.......
A Mild welding
B Stainless steel
C Carbon steel
D Aluminium

Answer: Aluminium
17 Thermit welding is a form of......
A Resistance welding
B Gas welding
C Fusion welding
D Forge welding

Answer: Fusion welding
18 Seam-welding is.........
A Multi-spot welding process
B Continuous spot welding process
C Used to form mesh
D Used for welding cylindrical objects

Answer: Continuous spot welding process
19 Projection welding is.......
A Multi-spot welding process
B Continuous spot welding process
C Used to form mesh
D Used to make cantilevers

Answer: Multi-spot welding process
20 Cross-wire welding is.......
A Multi-spot welding process
B Continuous spot welding process
C Used to form mesh
D Used where additional strength is desired

Answer: Used to form mesh

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