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WorksheetsOxy Acetylene Welding
Total questions: 18
Worksheet time: 18mins
In gas welding, the leakage may be tested using
sodium chloride
soap and water
acid and water
The acetylene gas is
flammable
non flammable
neutral
The color of the acetylene hose is
black
red
green
The maximum safe working gauge pressure for acetylene gas is
8 bar
15 bar
22 bar
to ignite the flame on Oxy Acetylene Gas Welding, I must first..
switch on Oxygen Gas
switch on both Acetylene and Oxygen Gas
switch on Acetylene Gas
switch on either Oxygen Gas or Acetylene Gas, it doesn't matter
When first switching on Oxy Acetylene Gas Welding, add Acetylene gas until..
smoke appears from the flame
cone is seen at the tip
smoke is minimal and flame is feathered
flame turns blue
What is the mixture of Neutral Flame?
Oxygen > Acetylene
Oxygen = Acetylene
Oxygen < Acetylene
Oxygen Only
When switching off Oxy Acetylene Gas Welding, I must..
swtich off Oxygen first, then Acetylene Gas
switch off Acetylene First, then Oxygen Gas
switch off both gases at the same time
switch off the regulator
When shutting down the system, why must we switch off Acetylene Gas first?
So that Oxygen can clean the nozzle tip
Because Acetylene is an expensive gas
So that fire doesn't go inside and down the torch
Because Oxygen is Flammable
What colour is Acetylene Gas Cylinder?
Black
Silver
Maroon / Red
Blue
Why do we need a Regulator on the Gas Cylinder?
To make sure no gas leaks from the cylinder
To regulate the pressure of gas released from the cylinder
To prevent gas from flowing backwards back into the cylinder
To regulate the temperature of the Gases
For basic Oxy Acetylene weld, which weave is used to manipulate the molten pool?
V weave
C weave
Circular Weave
Figure 8
The part (6) shown in the figure is
Oxygen cylinder
Oxygen hose
Blowpipe
The part (7) shown in the figure is
Oxygen cylinder
Acetylene cylinder
Oxygen hose
What is the tool name shown in fig
Spark lighter
Work piece
Nozzle cleaner
What is welding?
Join two metal parts together by heat
Join two metal parts together by nail
Join two metal parts together by glue
Join two metal parts together by oil
