41.
Which of the following is an example of plastic welding?
A
Arc welding
B
Forge welding
C
Thermit welding
D
Gas welding
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Which of the following is an example of plastic welding?
Arc welding
Forge welding
Thermit welding
Gas welding
Which of the welding processes utilize a non-consumable electrode?
Plasma Arc and Shielded Metal Arc
Shielded Metal Arc and Gas-Metal Arc
Gas-Metal Arc and Plasma Arc
Gas-tungsten Arc and Plasma Arc
Which of the following is not true for gas welding?
It is suitable for thin sheets
It is slower than arc welding
There are safety problems in storing and handling the gases
Heat effected zone and distortion are less as compare to arc welding
Which of the following is false regarding material to be welded and its corresponding welding process?
higher-alloy steels - GMAW and GTAW welding
Stainless steel - GTAW, GMAW and shielded-metal arc welding
Aluminium alloys - GMAW or GTAW process
high-carbon steel - shielded-metal arc, flux-cored arc, and submerged arc welding
Which flame is suitable for welding steel?
Carburising flame
Neutral flame
None of the above
Oxidising flame
Which flame is suitable for welding of non ferrous metals (brasses and bronzes)?
Carburising flame
Neutral flame
None of the above
Oxidising flame
Which flame is suitable for cutting operations?
Carburising flame
Neutral flame
None of the above
Oxidising flame
Which flame is suitable for welding of ferrous metals, Cu and Al alloys?
Oxidising flame
Carburising flame
Neutral flame
None of the above
Which of the processes can be classified as solid state welding?
Oxyfuel welding
Electron beam welding
Diffusion welding
Resistance welding
Heat is created by the chemical reaction in
Resistance welding
Oxy-acetylene welding
Tungsten arc welding
Thermit welding
Which of the following welding process is used for welding of sheet metals in automobile and air craft industries?
Shield metal arc welding
Gas tungsten arc welding
Thermit welding
Resistance welding
Which of the following is false regarding welding process and its corresponding minimum thickness of plate material?
Shielded-Metal Arc or Stick Weldments: minimum thickness - 1.5 mm
Submerged Arc Weldments: minimum thickness - 4.5mm
Flux-Cored Weldments: minimum thickness - 4.5 mm
Gas-Metal Arc Weldments: minimum thickness - 0.5 mm and even thinner
The resistance welding process suitable for welding ferrous and non-ferrous metals upto 8mm thickness is
Spot welding
Projection welding
Butt welding
Pressure welding
Which of the following is not a resistance welding?
Spot welding
Butt welding
Pressure welding
Percussion welding
Which of the following processes do not use flux during welding?
Submerged Arc
Oxyfuel
Flux Cored Arc
Friction
Which of the following is a design recommendation for welding?
Welded assemblies should have more parts
Welding should be done horizontally, with the stick or electrode holder pointing upward during welding
The buildup of weld fillets should be kept to a minimum
Locate welds where special finishing operations are required
Which of the following joint have high corrosion resistance?
Welding joint
Riveted joint
Bolted joint
None of the above
In fusion welding, penetration is the ratio of
width of the weld to its depth
length of the weld to its depth
depth of the weld to its width
depth of the weld to its length
Which one of the following is a temporary joint?
Welded joint
Riveted joint
Soldered joint
Press fit joint
In an acetylene cylinder, the acetylene is dissolved in
Water
Carbon Dioxide
Acetone
Mercury