Midterm Review

Question 1

True or False: Some welding methods bring the metal to a fluid state, and the edges flow together.

Answer 1

True

Question 2

True or False: Getting the parts of an assembly properly positioned may take more time than it takes to do the welding.

Answer 2

True

Question 3

True or False: All welding and cutting processes produce undesirable by-products.

Answer 3

False

Question 4

True or False: Ozone is very irritating to all mucous membranes.

Answer 4

True

Question 5

True or False: All metals distort by contraction when heated.

Answer 5

True

Question 6

True or False: Flat position welds can be made at a lower rate of travel than most other weld positions.

Answer 6

True

Question 7

True or False: It is considered good practice in the field to stop a weld at the corner of a joint.

Answer 7

False

Question 8

True or False: Welds can be made on one side or both sides of the joint.

Answer 8

True

Question 9

True or False: The welding process to be used has a minor effect on the selection of the joint design.

Answer 9

False

Question 10

True or False: Some codes and standards require specific edge preparations.

Answer 10

True

Question 11

What is the measurement of electrical pressure in welding similar to pounds per square inch in water?

Answer 11

Voltage

Question 12

The amount of heat produced by the arc is determined by the _______.

Answer 12

amperage

Question 13

In direct-current electrode positive, the electrode is positive, and the work is _______.

Answer 13

negative

Question 14

Open circuit voltage is the voltage at the electrode _______.

Answer 14

after striking an arc

Question 15

True or False: Before the invention of the inverter-type welder, each type of welding required a separate machine.

Answer 15

True

Question 16

The terms welding cables or welding leads are used to mean the same _______.

Answer 16

thing

Question 17

A very long arc length results in frequent _______ and sticking of the electrode.

Answer 17

shortening

Question 18

True or False: Long arc lengths produce less spatter.

Answer 18

True

Question 19

A forehand electrode angle drags molten metal and slag _______ of the weld.

Answer 19

ahead

Question 20

A backhand electrode angle pushes the molten metal and slag _______ of the weld.

Answer 20

ahead

Question 21

The exact weave pattern for each weld is often the _______ of the welder.

Answer 21

personal choice

Question 22

Hard spatter is spatter that fuses to the metal surface and cannot just be _______.

Answer 22

wiped off

Question 23

In metal fabrication, the assembling step corresponds to the process of _______.

Answer 23

permanently attaching the parts together to form the finished part

Question 24

The two most popular thermal cutting processes are oxyacetylene cutting (OAW) and _______.

Answer 24

plasma arc cutting (PAC)

Question 25

Combinations of oxygen and fuel gases (oxyfuel gas [OF]) can be used for welding such as hydrogen, Mapp, or _______.

Answer 25

Propane

Question 26

Tack welders often help the welder _______.

Answer 26

by making small welds to hold parts in place

Question 27

A fire extinguisher works by breaking the fire triangle of heat, fuel, and _______.

Answer 27

Oxygen

Question 28

In addition to straight welding, welders are often required to assemble parts together to form a _______.

Answer 28

weldment

Question 29

_________ are the welds, usually small in size, that are made during the assembly to hold all of the parts of a weldment together.

Answer 29

Tack welds

Question 30

_________ are devices that are made to aid in assemblies and fabrication of weldments.

Answer 30

Fixtures

Question 31

The best way of saving energy when using any welding equipment is to _______.

Answer 31

turn off the machines when they are not being used

Question 32

What polarity would a welding machine be set to when the work lead is connected to the positive terminal of the welding machine?

Answer 32

DCRP

Question 33

A(n) _______ joint is made by aligning the edges of two pieces of flat metal together so they are next to each other.

Answer 33

Butt

Question 34

The _______ of a joint is its ability to withstand being pulled apart.

Answer 34

tensile strength

Question 35

When welds are made in any position other than the flat position, they are referred to as being _______.

Answer 35

done out-of-position

Question 36

A fillet weld is designated by a _______.

Answer 36

right triangle

Question 37

Watts are calculated by multiplying voltage times _______.

Answer 37

amperes

Question 38

The operating voltage will vary with arc length, type of electrode being used, type of current, and _______.

Answer 38

shielding gas

Question 39

Engine-powered generators are widely used for _______.

Answer 39

portable welding

Question 40

Inverter welding machines are much smaller than other types of machines of the same _______ range.

Answer 40

amperage

Question 41

It is possible for alternators and generators to both use _______ to change the AC to DC for welding.

Answer 41

diodes

Question 42

The duty cycle is the percentage of time a welding machine can be used _______.

Answer 42

continuously

Question 43

Electrodes with the rutile-based fluxes are easier to control and are used for fillet, stringer beads, and _______.

Answer 43

lap joints

Question 44

The selection of the correct size of welding electrode for a weld is determined by the skill of the welder, the thickness of the metal to be welded, and the _______.

Answer 44

type of fuel gas used

Question 45

The electrode angle is measured from the electrode to the surface of the _______.

Answer 45

joint

Question 46

All welds start with a(n) _______.

Answer 46

arc strike

Question 47

A lot of practice is required to develop the speed and skill needed to prevent _______.

Answer 47

the electrode from sticking to the plate

Question 48

_________ are a temporary method of holding parts in place until they can be completely welded.

Answer 48

Tack welds

Question 49

A(n) _______ is made by placing the plates at an angle to each other.

Answer 49

tee joint

Question 50

A(n) _______ is made by overlapping the edges of the two plates.

Answer 50

lap joint

Question 51

Both GMA and FCA welding are classified as _______.

Answer 51

semiautomatic processes

Question 52

The symbol for a type D extinguisher is a _______ with the letter D in the center.

Answer 52

yellow star

Question 53

Which of the following machines transforms AC to DC?

Answer 53

transformer rectifier

Question 54

According to the AWS, which number indicates the positions a 7024 can be used in?

Answer 54

second number

Question 55

Which electrode is considered a low hydrogen coating?

Answer 55

E7018