1.0 Arc-eye
is a condition caused by exposure to UV light to unprotected eyes?
True
False
2.0 I
should always have the welding machine set to DCSP?
True
False
3.0 I
can weld underwater with AC current?
True
False
4.0 I
am an experienced MMA welder, so I don't need to use simple touch
welding techniques?
True
False
5.0 The
expression(s) DCSP, DCRP on the front panel of a welding machine
refers to polarity?
True
False
6.0 There
is no difference between open circuit voltage (OCV) and arc voltage
(AV)?
True
False
7.0 A
unit of power is expressed as a VOLT?
True
False
8.0 If
a unit of power is expressed as a Watt. Is the following statement
true? - Amperes x Voltage = Power = Watts?
True
False
9.0 SMAW
means shielded metal arc welding and MMA means manual metal arc
welding?
True
False
10.0 In
welding operations we have two basic currents types, AC and DC.
Which type of welding machine will only deliver AC current?
Arc
Welder
Transformer
T.I.G
All
of the above
11.0 Welding
current, as opposed to welding voltage is the only truly independent
variable?
True
False
12.0 A
welding arc emits three types of non-ionising radiation. Which
of the following types is likely to cause arc-eye?
Infra-red
Visible
Ultraviolet
(UV)
13.0 Having
set the welding machine to DCSP the electrode is connected to
the negative pole/terminal?
True
False
14.0 Resistance
in any welding circuit cannot be eliminated. However, which of
the following do you believe has the greatest effect upon resistance?
Long
welding cables
Loose
terminal fittings
Type
of electrode
15.0 The
rate of travel speed used in underwater welding depends upon which
of the following?
The
size of electrode
The
current value
The
welding position
The
technique used
All
of the above
16.0 Magnetic
interference when welding with DC current can be a potential difficulty.
If you are experiencing magnetic interference, or arc blow, as
it's commonly known, which of the following actions might help
in reducing its effects?
Reducing
the current value
Changing
welding direction
Relocation
of the return clamp
Sequence
welding techniques
All
of the above
17.0 Underwater
wet welds have a number of problems as compared to dry surface
welding, in relation to mechanical properties. The rapid quenching
effects produce a structure which is, which of the following?
Highly
ductile and malleable
Improved
tensile properties
Low
ductility, high hardness
All
of the above
18.0 Which
of the following weld defects is likely when wet welding carbon
steels underwater. (Assuming medium carbon structural steels)?
Highly
ductile and malleable
Improved
tensile properties
Low
ductility, high hardness
All
of the above
19.0 Welding
cables are provided in either copper, or aluminum construction.
What are the benefits of copper as compared to aluminum?
Cheaper
Lighter
Improved
current carrying capacity and flexibility
All
of the above
20.0 Welding
cables are provided in either copper, or aluminum construction.
What are the benefits of copper as compared to aluminum?
Current
carrying capacity
Maximum
operating power
Size
of machine
All
of the above
