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Welding Technology

Welding Technology

askmemetallurgy provides you lots of fully solved Metallurgical Engineering (Welding Technology) questions and answers with Explanation. All students, freshers can attemp or download Metallurgical Engineering Welding Technology quiz questions with answers as PDF files and eBooks.

1. In arc welding, eyes need to be protected against

spark
infrared rays
ultraviolet rays
b & C
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2. In which of the welding, pool of the molten metal is used

electroslag
submerged arc
MIG
TIG
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3. The main criterion for the selection of electrode diameter in arc welding is

material to be welded
type of welding process
thickness of material
voltage and current used
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4. The material used for coating the electrode is called

protective layer
binder
slag
flux
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5. The most commonly gas used in gas welding is

neutral
oxidizing
carburizing
all of the above
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6. Following gases are used in TIG welding

hydrogen and oxygen
CO2 and H2
argon and helium
argon and neon
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7. Projection welding is

multi-spot welding process
continuous spot welding process
used to form mesh
none of the above
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8. Grey Cast iron is best welded by

TIG
arc
MIG
oxy-acetylene
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9. In resistance welding, the pressure is released

just at the time of passing the current
after completion of current
after the weld cools
the pressure is never applied
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10. Seam welding is

multi-spot welding process
continuous spot welding process
used to form mesh
none of the above
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11. In arc welding, arc is created between the electrode and work by

flow of current
voltage
material characteristics
contact resistance
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12. Open curcuit voltage for arc welding is

18-40 volts
40-95 volts
100-125 volts
130-170 volts
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