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CM 2112 FINAL EXAM Questions and
Correct Answers/ Latest Update / Already
Graded
Which of the following I'm not a common non-destructive test for
welds?
Ans: Schmidt hammer
What is the most commonly used gas in gas welding?
Ans: Acetylene
By varying the ratio of oxygen to acetylene in gas mixture supplied by
the torch it is possible to vary the efficiency of the combustion and
alter the nature of the flame. If the oxygen supply is slightly greater
than the supply of acetylene by volume, what is known as.........is
resulted.
Ans: An "oxidizing" flame
Laser beam welding is........
Ans: A process that fuses materials with the heat from a
concentrated coherent beam impinging upon the members to
be joined.
All rights reserved © 2025/ 2026 |
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Which of the following is NOT accurate
Ans: Gas welding refers to a group of welding processes which
produces coalescence of metals be heating them with an arc.
(Shipbuilding) It is Easier to obtain watertightness and oiltightness
with welded joints, compared to riveting.
Ans: True
Friction Stir welding is a solid-state welding process which produces
coalescence of material by the heat obtained from a mechanically
induced rotating motion between tightly butted surfaces.
Ans: True
Gas welding, arc welding, and resistance welding all provide heat
sources of sufficient intensity to achieve fusion welds.
Ans: True
Oxy-acetylene welding tends to be faster than other fusion welding
processes because the process temperature is high in comparison with
the melting temperature of the metal.
All rights reserved © 2025/ 2026 |
CM 2112 FINAL EXAM Questions and
Correct Answers/ Latest Update / Already
Graded
Which of the following I'm not a common non-destructive test for
welds?
Ans: Schmidt hammer
What is the most commonly used gas in gas welding?
Ans: Acetylene
By varying the ratio of oxygen to acetylene in gas mixture supplied by
the torch it is possible to vary the efficiency of the combustion and
alter the nature of the flame. If the oxygen supply is slightly greater
than the supply of acetylene by volume, what is known as.........is
resulted.
Ans: An "oxidizing" flame
Laser beam welding is........
Ans: A process that fuses materials with the heat from a
concentrated coherent beam impinging upon the members to
be joined.
All rights reserved © 2025/ 2026 |
, Page |2
Which of the following is NOT accurate
Ans: Gas welding refers to a group of welding processes which
produces coalescence of metals be heating them with an arc.
(Shipbuilding) It is Easier to obtain watertightness and oiltightness
with welded joints, compared to riveting.
Ans: True
Friction Stir welding is a solid-state welding process which produces
coalescence of material by the heat obtained from a mechanically
induced rotating motion between tightly butted surfaces.
Ans: True
Gas welding, arc welding, and resistance welding all provide heat
sources of sufficient intensity to achieve fusion welds.
Ans: True
Oxy-acetylene welding tends to be faster than other fusion welding
processes because the process temperature is high in comparison with
the melting temperature of the metal.
All rights reserved © 2025/ 2026 |
