Practice Exam #2: Chapters 15-18

Question 1

Which out of position can be made with all metal transfer methods?

Answer 1

Horizontal fillet weld

Question 2

When comparing spray transfer to short circuiting transfer, which of the following is true?

Answer 2

Higher current and voltage are required

Question 3

Which of the following is not a reason for welding in the flat welding position?

Answer 3

Helium sheilding gas is lighter than other shielding gases

Question 4

What is used to adjust the maximum short circuit current?

Answer 4

Slope adjustment

Question 5

What drag travel angle should be used when welding in the overhead position?

Answer 5

5°-15°

Question 6

The _______ method pulls or drags the weld pool along the weld axis?

Answer 6

backhand

Question 7

What work angle should be used when making a fillet weld in the flat position?

Answer 7

45°

Question 8

To establish shielding gas flow so the flow rate can be adjusted, set the ________ for 15-20 seconds and pull the gun trigger for a second or less

Answer 8

Post flow adjustment

Question 9

What should be done if the dry rolls slip while feeding the electrode wire?

Answer 9

Adjust the pressure adjusting knob

Question 10

What travel angle is used when welding downhill?

Answer 10

20°- 25°

Question 11

Which of the following will cause ripples in the weld bead to be unevenly spaced?

Answer 11

Moving the gun at an uneven speed

Question 12

In GMAW, the arc is struck between the _______ and ___________

Answer 12

electrode and base metal

Question 13

Which of the following will not help prevent undercutting on a horizontal fillet weld?

Answer 13

Changing to forehand welding method

Question 14

What shielding gas flow rate should be used when welding 1/8” (3.2 mm) mild steel in the flat position?

Answer 14

30 cfh (14 L/min)

Question 15

What is attached to the root side of the joint to control penetration?

Answer 15

backing

Question 16

Shielding gas flow rates for overhead welding are ______ those for welding in the flat welding position.

Answer 16

higher than

Question 17

Which of the following is not part of a complete GMAW outfit?

Answer 17

welding rod

Question 18

What is the distance from the end of the electrode to the base metal called?

Answer 18

Arc length

Question 19

Pulsed spray transfer is similar to standard spray transfer however, there are two different currents used. What are the names of the different currents?

Answer 19

Peak and background currents

Question 20

What part of the welding gun needs to be replaced most often?

Answer 20

contact tube

Question 21

Which welding position is considered to be the most difficult?

Answer 21

overhead

Question 22

A butt joint can be formed with a square groove or the edge can be prepared with a groove such as a(n):

Answer 22

V-groove

Question 23

If the ripples are not evenly spaced, practice moving the gun at _____________ speed.

Answer 23

constant

Question 24

Which of the following will not help eliminate birds nest when welding aluminum?

Answer 24

Welding only in the flat position

Question 25

Which of the following defects is not produced in GMAW and FCAW?

Answer 25

Overcut

Question 26

Which of the following is not a connection required when setting up a GMAW outfit?

Answer 26

Connect the gun cable to the machine or wire feeder

Question 27

What does MIG stand for?

Answer 27

Metal inert gas

Question 28

What shape is the weld pool when making an out of position fillet weld?

Answer 28

C-Shape

Question 29

What type of welding machine is used for GMAW?

Answer 29

Constant voltage

Question 30

When making a butt weld, what is the proper work angle?

Answer 30

0°

Question 31

Which of these electrodes can be used in all welding positions?

Answer 31

E81T-X