Tpc 417 Welding Principles

Question 1

In welding, a filler rod is used to

Conduct electricity
Connect the electrode to the work
Remove excess metal from the weld
Supply extra metal to the weld

Answer 1

Supply extra metal to the weld

Question 2

In which welding process does the electrode produce a shielding gas as it is consumed?

GMAW
GTAW
MIG
SMAW

Answer 2

SMAW

Question 3

A weld with a triangular cross-section that joins two surfaces at right angles is called a _______ weld

Fillet
Groove
Plug
Slot

Answer 3

Fillet

Question 4

Crown; toe; depth
Face; toe; throat
Route; depth; toe
Toe; root; throat

Answer 4

Toe; root; throat

Question 5

Joints, alignment, spacing, and edge preparation together are called joint

Configuration
Fitup
Loading
Penetration

Answer 5

Fitup

Question 6

Good housekeeping in an area where you are going to weld includes

Assuming any metal in the area is hot
Moving any hoses or cables out of the way
Wearing eye protection
Wearing protective gloves

Answer 6

Moving any hoses or cables out of the way

Question 7

To avoid the risk of fire or explosion when you were welding or cutting, you should

Drain a chemical container before welding it
Keep any matches in your pocket
Remove combustibles from the area
Use a butane lighter to lite your torch

Answer 7

Remove combustibles from the area

Question 8

Which of the following is a good way to protect yourself from fumes and gases during welding?

Hold your head to one side of the work
Place a protective screen around the area
Turn off exhaust fans in the area
Wear a welding mask

Answer 8

Hold your head to one side of the work 

Question 9

When welding, you should wear

A short sleeve shirt
Gloves made of leather or canvas
Low cut steel toe shoes
Pants with cuffs

Answer 9

Gloves made of leather or canvas

Question 10

You should have a qualified technician examine a regulator and repair it if the regulator

Fits on the fuel cylinder, but not the oxygen cylinder
Leaks after reasonable tightening
Shows a constant working pressure as the supply gradually decreases
Shows zero working pressure at the start

Answer 10

Leaks after reasonable tightening

Question 11

Which of the following components is part of an Oxyfuel welding outfit 

Electrode
Filler cartridge
Torch
Welding cables

Answer 11

Torch

Question 12

Which of the following items of clothing protect you from flying Sparks and metal spatters during welding

Boots or high cut shoes
Cap Made of knitted fabric
Coat with large pockets
Sweater with long sleeves

Answer 12

Boots or high cut shoes

Question 13

When preparing for oxy fuel welding, which of the following steps, should you perform first?

Connect the hoses to the regulators
Connect the torch to the hoses
Crack the cylinder valve to blow out the dirt
Thread, each regulator into its cylinder

Answer 13

Crack the cylinder valves to blow out the dirt

Question 14

A neutral oxyacetylene flame has a ______ cone surrounded by a _____ envelope

Blue;white
White;blue
White;yellow
Yellow;white

Answer 14

White;blue

Question 15

To shut down an Oxsee fuel welding system, first close the______valve on the________

Fuel;cylinder
Fuel;torch
Oxygen;cylinder
Oxygen;torch

Answer 15

Oxygen;torch

Question 16

What is similar between oxy, fuel, welding, and arcwelding?

Area of heat concentration
Required joint preparation
Source of heat
Use of temperatures near 9000°F

Answer 16

Required joint preparation

Question 17

In arc welding the term DCEN means the electrode is _____ which causes electrons to move ________ the electrode

Negative; away from
Negative; toward
Neutral;away from
Neutral;toward

Answer 17

Negative; away from

Question 18

A welding machine for average duty general service is rated in a range of about_______ A

50 to 150
250 to 350
450 to 550
650 to 750

Answer 18

250 to 350

Question 19

What kind of welding uses a nonconsumable electrode

GMAW
GTAW
Oxyfuel
sMAW

Answer 19

GTAW

Question 20

Tools that are especially useful to Welder’s include

Chipping hammer
Degreasing solvent
File
Hacksaw

Answer 20

Chipping hammer

Question 21

When looking for an inexpensive welding method that does not require external power you should choose

GMAW
GTAW
Oxyfuel welding
SMAW

Answer 21

Oxyfuel welding

Question 22

In a horizontal weld, the welding is done from_____ the work. In a flat wild, it is done from.__________ the work

Above; below
Above; beside
Below; above
Beside; above

Answer 22

Beside; above

Question 23

The most difficult position for welding is_______. The easiest position is.______

Overhead; flat
Overhead; vertical
Vertical; flat
Vertical; overhead

Answer 23

Overhead; flat

Question 24

The first step you should take in preparation for SMAW welding is

Adjust the welding machine controls
Obtain the necessary safety equipment
Position the torch correctly
Turn on the gas supply

Answer 24

Obtain the necessary safety equipment

Question 25

For most GTAW welding, you should tilt the gun about________ degrees from vertical in the direction of the world and keep a__________ in arc length 10; 1/16 15; 1/8 20; 1/4 25; 1/2

Answer 25

15; 1/8 

Question 26

Setting the current too high on a welding machine can cause Insufficient penetration Irregular weld beads Waste of weld metal Weld material pile up 

Answer 26

Irregular weld beads

Question 27

Which of the following problems can be corrected by welding with AC power Arc blow Hard to start arc Overlap Undercut

Answer 27

Arc blow

Question 28

Excessive heating, and cooling can result in which of the following faults Blowholes Brittle welds Inclusions Porosity

Answer 28

Brittle welds

Question 29

Uneven expansion and contraction near a welded joint can cause_________ in the metal Chemical breakdown Excessive concavity Inadequate penetration Warping

Answer 29

Warping

Question 30

Which of the following is a nondestructive test used in the identification of metals Chip test Flame test fracture test Magnetic reaction test

Answer 30

Magnetic reaction test 

Question 31

The symbol below specifies a ________ weld, to be made on the____ Side of the joint  Bevel; other Fillet; arrow Square; other V-joint; arrow

Answer 31

Fillet; arrow 

Question 32

The weld should be _____in. high 1/2 2 2.5. From 2 to 5

Answer 32

1/2

Question 33

The exposed surface of the weld should be Concave Convex Flush Hardened

Answer 33

Convex 

Question 34

The weld should be finished by Chipping Hammering Machining Unspecified

Answer 34

Hammering 

Question 35

The symbol tells the welder to use what kind of welding? Gas metal arc Oxyacetylene Resistance Unspecified

Answer 35

Unspecified