Welding final review Flashcards


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1

T/F PPE safety glasses/goggles must have Z87 or Z87+ marked on the frame

True

2

T/F Any welding lens shade is permissible for all types of welding applications

False

3

T/F Infrared radiation (IR) cannot be felt

False

4

T/F Arc blow occurs when a magnetic field is developed while welding and causes the arc to move in an unpredictable manner

True

5

T/F The primary purpose of a shielding gas being present during the welding process is to protect the molten puddle form atmospheric contamination

True

6

T/F Changing the length of the arc while welding does not change the heat of the arc

False

7

T/F With SMAW, the primary reason starting the arc is more difficult than maintaining the arc is because the gas at the arc strike is not fully ionized

True

8

T/F Using a weave pattern while placing a bead will increase the amount of heat in the weldment

True

9

Which polarity listed does not cause (magnetic) arc blow?

AC

10

With SMAW and a given amperage, which polarity will provide the deepest penetration of the bead?

DCEP

11

Which of the following welding processes does a welder have some choice in the polarity selected for a given electrode?

GTAW or SMAW

12

Which of the following statements is not a consideration when choosing DCEP or DCEN for a SMAW electrode?

Base metal shapes (plate, pipe, etc.)

13

T/F An edge joint is formed with two overlapping materials. The edges create fillet weld

False

14

T/F Reinforcement refers to the depth of the penetration

False

15

T/F Restricted position means that the welder's positioning when welding pipe is restricted. Areas to be welded are difficult to reach

True

16

T/F When a weld symbol is both above and under the reference line, it means that welds are to be completed on both sides of the joint

True

17

T/F An outside corner joint creates the geometry for a groove weld

False

18

T/F Pipe welding is comprised mostly of fillet welds

False

19

T/F A square groove weld requires some type of mechanical joint preparation prior to fit-up

False

20

T/F A lap joint creates the geometry for fillet welds

True

21

T/F A 3F weld is a fillet weld completed on the horizontal position

False

22

The edges of a weld are the?

Toes

23

For welding certification, a flat welding position groove weld is

1G

24

If a weld symbol is_______ the reference line, then the weld is to be completed on the side that the arrow is pointing to

Below

25

Which of the following identifies pipe positioned at a 45-degree angle?

6G

26

Cutting tips are made out of which alloy?

Copper or chrome plated

27

What could happen if acetylene was used with the wrong tip?

The tip could overheat and cause backfire

28

What is the most widely used fuel gas used for cutting?

Acetylene

29

The oxygen cylinder valve should be opened____

Slowly until the pressure registers on the cylinder guage, them all the way up to prevent leaks in the top of the valve

30

The center hole on a cutting tip determines

The thickness of material to be cut

31

T/F The SMAW process only uses AC polarity

False

32

T/F Alternating current (AC) is the preferred type of current for welding for SMAW

False

33

T/F A welder inverter is less complex than the other traditional welding power sources

False

34

T/F The stops and re-starts necessary with SMAW electrodes increases the risk of weld defects

True

35

T/F Direct current has neither a positive or negative value 120 times per second

False

36

T/F SMAW has one of the highest operating factors of the arc welding processes

False

37

The most basic type of welder is an

Transformer

38

Which of the following is not part of the welding electrical circuit?

None of the above

39

The transformer inside a welding power source converts high voltage, low amperage electricity to_________ electricity for welding

Low voltage, high amperage

40

To increase penetration of a bead, you should select which welding polarity?

DCEP

41

Which polarity is also referred to as reverse polarity?

DCEP

42

Changes in the welding arc length will also change the following electrical characteristics?

Voltage

43

T/F Metals are joined using the arc welding process when two pieces of metal are heated to their melting point and additional metal is added to the molten puddle. This molten mass cools and solidifies into one solid piece

True

44

T/F DCEN polarity is used when welding in the GMAW process

False

45

T/F The loss of shielding gas when welding outdoors can cause weld failures as a result of porosity, lack of fusion, and other undesirable discontinuities in a weld

True

46

T/F GMAW exclusively uses inert shielding gas

False

47

A constant voltage system strives to keep which variables constant?

Arc length

48

T/F The delivery of gas to the arc is not important to the quality of the finished weld in the FCAW-G welding processes

False

49

T/F A flow meter regulator is designed to measure cylinder pressure and gas flow

True

50

T/F The four roll drive system of a wire drive is used primarily for industrial applications

True

51

T/F A FCAW wire drive component cannot be used for other types of welding wire

False

52

T/F A basic FCAW power source is a transformer

True

53

T/F The CTWD is the total of both the wire stick out and the arc length

True

54

T/F An air cooled welding gun will be limited to operating at lower amperages

True

55

The gas diffusor functions in the following manner?

All of the above

56

Which of the following is not true in describing the liner in the welding gun assembly?

It is a permanent part of the cable assembly

57

What is the technology that senses the consumables are installed properly into the torch?

Parts-in-place technology

58

What are the two parameters that can be manually adjusted on the PAC machine?

Amperage and air pressure

59

What two items should not be carried in your pocket when cutting?

Plastic lighter and matches

60

T/F Self-shielded electrodes are best suited for indoor applications

False

61

T/F The FCAW self-shielded electrode can be thought of as a STICK welding electrode turned inside out

True

62

T/F The FCAW process uses a continuous consumable electrode

True

63

T/F FCAW processes have a much higher deposition rate than SMAW

True

64

T/F The E70T-X electrode can be used in all-position welding

False

65

T/F Multi-pass welds can be made with FCAW-G electrodes

True

66

T/F As a process, FCAW-S is considered to be more portable than the FCAW-G process

True

67

The primary function of the flux inside a FCAW-S electrode is to

Protect the weld

68

The main operating difference between FCAW-S and FCAW-G is

Polarity

69

An E81T-X FCAW electrode will have a minimum of_____ psi tensile strength

80,000

70

Calcium is part of the flux with FCAW electrodes for which of the following reasons

Produce the slag