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WLD-112 BASIC WELDING FINAL

Total questions: 30

Worksheet time: 2hrs 25mins

Name
Class
Date
1.
Define Welding. 
a)
processes of using heat and power to combine multiple metals 
b)
Joining of metal with extreme temperatures 
c)
permanent fusion of two or more pieces of metal using heat, and or friction and or pressure
d)
Melting metal to other materials such as conctrete or wood. 
2.
What does the acronym GMAW stand for?
a)
gas metal acetylene welding
b)
gas machine arc welding
c)
gas metal arc welding
d)
None of the above
3.
Necessary protection includes all except_______?
a)
Gloves, safety glasses
b)
Leather, exhaust
c)
Shorts, sun-glasses
d)
Welding helmet, safety shoes
4.
The electrode travel angle from perpendicular to the plate in the direction of travel should be?
a)
15 to 20
b)
25 to 45
c)
45 to 90 
d)
180 to 360
5.
With this method of GMAW the filler metal is deposited when the wire touches the work; approximately 20 to 200 times per second.
a)
Short Circuit Transfer
b)
Globular Transfer
c)
Spray Transfer
d)
None of the above
6.
This shielding gas provides better weld bead appearance.
a)
CO2
b)
75% Argon 25% CO2
c)
Helium
d)
Oxygen
7.
GMAW process uses which type of power source?
a)
Constant Current
b)
Constant Voltage
c)
Constant Power
d)
None of the above
8.
Knurled drive rolls are used for_________.
a)
Hard wires
b)
Soft wires
c)
Flux/Metal cored wires
d)
None of the above
9.
V-grooved drive rolls are used for_______.
a)
hard wires
b)
soft wires
c)
flux cored wires
d)
none of the above
10.
Plasma Arc Cutting (PAC) will NOT work on aluminum because the aluminum in non-magnetic.
a)
True
b)
False 
11.
What metal listed below gives off toxic zinc fumes when plasma cutting?
a)
Aluminum
b)
Galvanized steel
c)
High carbon steel
d)
high strength low alloy steel
12.
The typical amount of material removed by the plasma cutter is _______.
a)
1/8"
b)
1/4"
c)
1/16"
d)
1 inch only
13.
Which of the following is NOT one of the five common weld joints?
a)
Tee
b)
Corner
c)
Bead
d)
Lap
14.
What is the recommended filter shade lens needed for oxy acetylene welding? 
a)
10
b)
7
c)
8
d)
5
15.
Acetylene gas can self combust when it reaches what pressure? 
a)
5 psi 
b)
10 psi 
c)
15 psi 
d)
15 cfh 
16.

Why is oxygen added to acetylene for cutting?

a)

make it hotter

b)

make the flame cleaner

c)

reduce the amount of carbon deposit

d)

to puddle metal with other metals

17.

A thinner glove is typically preferred when Brazing because?

a)

the temperature is not very hot

b)

because its not synthetic

c)

in case of fire prevention

d)

finger and manual dexterity

18.
What is an oxidizing flame? 
a)
a flame containing excess amount of fuel gas 
b)
a flame containing excess amount of oxygen 
c)
a flame that pushed away all oxygen 
d)
a flame that use oxygen to get hotter 
19.

What are the different welding tips used for during O/A Brazing?

a)

for different thickness of metal

b)

for different types of metal

c)

to switch from cutting to welding

d)

to control the flame so it is safe

20.

What is the acetylene pressure setting for correctly Oxy Acetylene Cutting, Brazing, or welding?

a)

5 psi

b)

5 cfh

c)

5 kg

d)

5 abs

21.

Oxy Acetylene Brazing and Welding is a two handed process, what does this mean?

a)

two hands are used to control the large fire existing the torch

b)

grab the torch with two hands, both like a pencil

c)

one hand operates the torch while the other hand adds filler material

d)

one hand operates the torch while the other hand controls gas pressure

22.
All acetylene fitting are_____________.
a)
reversed threaded 
b)
right hand threaded 
c)
hand tightened only 
d)
fine coarse threaded 
23.
Mechanized OFC (Oxy fuel cutting) is commonly referred to as a track torch.
a)
True
b)
False
24.
A super heated gas is called________.
a)
Vapor
b)
Liquid
c)
Solid
d)
Plasma
25.
The typical amount of material removed by the plasma cutter is _______.
a)
1/8"
b)
1/4"
c)
1/16"
d)
1 inch only
26.
While using the Plasma Arc Cutting (PAC) process, the air must be?
a)
Completely Dry
b)
Lubricated
c)
Humidified
d)
Inert
27.

What type of valve does oxygen have?

a)

Single Seated

b)

Double Seated

28.

The oxygen valve is opened on and adjusted to obtain a __________ flame

a)

purple

b)

feather

c)

hot

d)

neutral

29.

With the oxygen and acetylene properly adjusted the temperature of the flame is ____________ degrees.

a)

60,000

b)

2,800

c)

6,000

d)

4,000

30.

When the steel is hot enough, the cutting oxygen lever is pushed and the steel starts to ___________.

a)

burn

b)

oxidise

c)

widdle

d)

melt

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