CM 2112 FINAL EXAM 2026 QUESTIONS AND ANSWERS | VERIFIED 100% CORRECT.
Which of the following I'm not a common non-destructive test for welds? - (answer)Schmidt hammer
What is the most commonly used gas in gas welding? - (answer)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. - (answer)An "oxidizing"
flame
Laser beam welding is........ - (answer)A process that fuses materials with the heat from a concentrated
coherent beam impinging upon the members to be joined.
Which of the following is NOT accurate - (answer)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. - (answer)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. - (answer)True
Gas welding, arc welding, and resistance welding all provide heat sources of sufficient intensity to
achieve fusion welds. - (answer)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. - (answer)False
Water jet cutting is based on concentrated water jet, with or without abrasive, which is released from a
nozzle at a pressure level of several thousands bar. Water jet cutting can be used on steels too. -
(answer)True
, CM 2112 FINAL EXAM 2026 QUESTIONS AND ANSWERS | VERIFIED 100% CORRECT.
Electro-Gas welding is an arc welding process, which combines features of gas and shielded welding with
those of electro-slag welding. - (answer)True
Any polymer consisting of a chain of organic units joined by urethane links: - (answer)Polyurethane
In its simplest form a furnace consists of a...., to provide the process energy - (answer)Casing with a heat
source
(Monolithic linings) castable refractory consist of.... - (answer)A graded refractory material and a
bonding agent
Forming a conversion coating on a metal surface by anodic oxidation is called...... - (answer)Anodizing
(Corrosion prevention by paints) The potential life of a protective system is unlikely to be realized
unless: - (answer)All of the above
Alkaline refers to the properties of an alkali, and a pH greater than 8 - (answer)False
The process of atomizing paint by forcing it though an opening at high pressure is called airless spraying.
- (answer)True
Anodic coating is a film on a metal surface resulting from an electrolytic treatment at the cathode -
(answer)False
The process of coating metal with a very thin layer of molten solder or brazing filler metal is called
"tinning" - (answer)True
(Conductivity)k-value is the measure of heat in BTU's that pass through one square foot of a
homogeneous substance, 1-inch thick, in a hour, for each degree F temperature difference -
(answer)True
Which of the following I'm not a common non-destructive test for welds? - (answer)Schmidt hammer
What is the most commonly used gas in gas welding? - (answer)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. - (answer)An "oxidizing"
flame
Laser beam welding is........ - (answer)A process that fuses materials with the heat from a concentrated
coherent beam impinging upon the members to be joined.
Which of the following is NOT accurate - (answer)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. - (answer)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. - (answer)True
Gas welding, arc welding, and resistance welding all provide heat sources of sufficient intensity to
achieve fusion welds. - (answer)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. - (answer)False
Water jet cutting is based on concentrated water jet, with or without abrasive, which is released from a
nozzle at a pressure level of several thousands bar. Water jet cutting can be used on steels too. -
(answer)True
, CM 2112 FINAL EXAM 2026 QUESTIONS AND ANSWERS | VERIFIED 100% CORRECT.
Electro-Gas welding is an arc welding process, which combines features of gas and shielded welding with
those of electro-slag welding. - (answer)True
Any polymer consisting of a chain of organic units joined by urethane links: - (answer)Polyurethane
In its simplest form a furnace consists of a...., to provide the process energy - (answer)Casing with a heat
source
(Monolithic linings) castable refractory consist of.... - (answer)A graded refractory material and a
bonding agent
Forming a conversion coating on a metal surface by anodic oxidation is called...... - (answer)Anodizing
(Corrosion prevention by paints) The potential life of a protective system is unlikely to be realized
unless: - (answer)All of the above
Alkaline refers to the properties of an alkali, and a pH greater than 8 - (answer)False
The process of atomizing paint by forcing it though an opening at high pressure is called airless spraying.
- (answer)True
Anodic coating is a film on a metal surface resulting from an electrolytic treatment at the cathode -
(answer)False
The process of coating metal with a very thin layer of molten solder or brazing filler metal is called
"tinning" - (answer)True
(Conductivity)k-value is the measure of heat in BTU's that pass through one square foot of a
homogeneous substance, 1-inch thick, in a hour, for each degree F temperature difference -
(answer)True
