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Welding Theory > Midterm Review > Flashcards

Midterm Review Flashcards

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Welding Inspection Basics flashcards
1
Q

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

A

True

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2
Q

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

A

True

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3
Q

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

A

False

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4
Q

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

A

True

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5
Q

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

A

True

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6
Q

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

A

True

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7
Q

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

A

False

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8
Q

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

A

True

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9
Q

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

A

False

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10
Q

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

A

True

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11
Q

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

A

Voltage

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12
Q

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

A

amperage

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13
Q

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

A

negative

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14
Q

Open circuit voltage is the voltage at the electrode _______.

A

after striking an arc

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15
Q

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

A

True

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16
Q

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

A

thing

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17
Q

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

A

shortening

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18
Q

True or False: Long arc lengths produce less spatter.

A

True

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19
Q

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

A

ahead

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20
Q

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

A

ahead

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21
Q

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

A

personal choice

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22
Q

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

A

wiped off

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23
Q

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

A

permanently attaching the parts together to form the finished part

24
Q

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

A

plasma arc cutting (PAC)

25
Q

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

A

Propane

26
Q

Tack welders often help the welder _______.

A

by making small welds to hold parts in place

27
Q

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

A

Oxygen

28
Q

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

A

weldment

29
Q

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

A

Tack welds

30
Q

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

A

Fixtures

31
Q

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

A

turn off the machines when they are not being used

32
Q

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

A

DCRP

33
Q

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

A

Butt

34
Q

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

A

tensile strength

35
Q

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

A

done out-of-position

36
Q

A fillet weld is designated by a _______.

A

right triangle

37
Q

Watts are calculated by multiplying voltage times _______.

A

amperes

38
Q

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

A

shielding gas

39
Q

Engine-powered generators are widely used for _______.

A

portable welding

40
Q

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

A

amperage

41
Q

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

A

diodes

42
Q

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

A

continuously

43
Q

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

A

lap joints

44
Q

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 _______.

A

type of fuel gas used

45
Q

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

A

joint

46
Q

All welds start with a(n) _______.

A

arc strike

47
Q

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

A

the electrode from sticking to the plate

48
Q

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

A

Tack welds

49
Q

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

A

tee joint

50
Q

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

A

lap joint

51
Q

Both GMA and FCA welding are classified as _______.

A

semiautomatic processes

52
Q

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

A

yellow star

53
Q

Which of the following machines transforms AC to DC?

A

transformer rectifier

54
Q

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

A

second number

55
Q

Which electrode is considered a low hydrogen coating?

A

E7018

Welding Theory (9 decks)

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