Deck 15: Welding Technology

Question 1

While having a discussion, Technician A says that plug welds are used when a car is built in a factory.Technician B says resistance spot welds are used when a car is built in a factory.Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Answer 1

B

Question 2

During the welding process, either inert gas or active gas shields the weld from the atmosphere and prevents oxidation of the base metal.

Answer 2

True

Question 3

Electronic shielding or protection is needed when welding near on-board computers (electronic control units [ECUs]) and sensor wiring.

Answer 3

True

Question 4

In an MIG lap weld, the arc is directed to penetrate both pieces of metal, while triggering a timed impulse of wire feed.

Question 5

A(n) ____ sometimes called a filter plate, is a shaded glass welding helmet insert for protecting your eyes from ultraviolet burns.

A) welding filter lens
B) insert
C) lap weld
D) destructive check

Question 6

While having a discussion, Technician A says that if the tip-to-base metal distance is too long, the length of wire protruding from the end of the gun increases and becomes preheated, which increases the melting speed of the wire.Technician B says that if the tip-to-base metal distance is too long, the shield gas effect will be reduced.Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 7

MIG welders lay down weld beads at the average of 15 inches (381 mm) per minute.

Question 8

Welding blankets are thick covers made of fire resistant cloth for protecting vehicle surfaces from heat, sparks, and weld spatter.

Question 9

____ is an electric arc welding process that uses a tubular wire with flux inside.

A) Pressure welding
B) Vertical welding
C) Flux-cored arc welding
D) Plasma arc cutting

Question 10

Which of the following statements is LEAST-Likely true?

A) Most MIG machines that are designed for collision repair work have built-in timers that shut off the wire feed and welding arc after the time required to weld one spot.
B) For MIG spot welding, a special welding nozzle must replace the standard nozzle.
C) The MIG lap spot technique is a popular one for the quick, effective welding of lap joints and flanges on thin gauge, nonstructural sheets and skins.
D) In MIG stitch welding, the spot nozzle is used, not the standard nozzle.

Question 11

Lap and flange welds should be made only in repairs where they replace original factory lap or flange welds or where outer panels, but not structural panels, are involved.

Question 12

____ is a paste that can be applied to parts to absorb heat and prevent warpage.

A) Antispatter compound
B) Thermal paint
C) Heat sink compound
D) Heat crayon

Question 13

The weld face is the part of the joint where the wire electrode is directed.

Question 14

All of the following are considered clamping tools for welding EXCEPT:

A) pliers
B) sheet metal screws
C) grinders
D) tack welds

Question 15

The term____ implies that the pieces are parallel with the bench or shop floor.

A) fusion welding
B) flat welding
C) spot weld
D) tack welding

Question 16

____ affects the base metal penetration depth, the speed at which the wire is melted, arc stability, and the amount of weld spatter.

A) Plug weld
B) Flat welding
C) Plasma arc cutting
D) Welding current

Question 17

When welding a horizontal joint, the best procedure is usually to start the arc at the top of the joint and pull downward with a steady drag.

Question 18

A ____ on the back of a weld is an indication of good weld penetration.

A) plug weld
B) burn mark
C) stitch weld
D) weld face

Question 19

Butt welds are formed by fitting two edges of adjacent panels together and welding along the mating or butting edges of the panels.

Question 20

When welding near a vehicle computer, remove the computer from the vehicle to avoid electronic circuit damage.

Question 21

The _________________________ is the area around the weld that becomes adversely hot.

Question 22

The strength of individual spot welds is determined by the ____ and edge distance (the distance of the spots from the panel edge).

A) tack weld pitch
B) stitch weld pitch
C) plug weld pitch
D) spot weld pitch

Question 23

______________________________ is classified by series, according to the metal or metals the aluminum is alloyed with and whether the aluminum is heat treated.

Question 24

____ is used to measure the strength of a weld, and a visual inspection is used to judge the quality of the outward appearance.

A) Destructive testing
B) Pitch testing
C) Spot testing
D) Nondestructive testing

Question 25

____________________ uses extreme heat to join or fuse pieces of metal together.

Question 26

Which of the following is LEAST-Likely a component of a resistance spot welder?

A) Welding transformer
B) Welder control
C) Insert
D) Welding gun with interchangeable arm sets

Question 27

______________________________ means the wire (electrode) is positive and the workpiece is negative.

Question 28

All of the following are components of an oxyacetylene welding and cutting outfit EXCEPT:

A) the tip
B) the twin hose
C) the oxygen cylinder
D) the filter

Question 29

Discuss plasma arc cutting, how it works, and its advantages.

Question 30

______________________________ relies on the resistance heat generated by low-voltage electric current flowing through two pieces of metal held together, under pressure, by the squeeze force of the welding electrodes.

Question 31

What are the characteristics of welding?

Question 32

The main ingredients of brass brazing metal is MOST-Likely:

A) silver and copper
B) copper and zinc
C) nickel and chrome
D) copper and phosphorus

Question 33

____ or thermal paint can be used to determine the temperature of the aluminum or other metal being heated.

A) Heat crayons
B) Plugs
C) Heat effect zones
D) Inserts

Question 34

What is the difference between continuous weld and plug weld?

Question 35

The cause of flame fluctuations, when welding, is MOST-Likely:

A) moisture in the gas
B) clogged tip
C) high oxygen pressure
D) enlarged tip orifice

Question 36

The standard flame is said to be a(n) ____.

A) torch flame
B) neutral flame
C) oxidizing flame
D) carburizing flame

Question 37

____ is a method of welding in which a nonferrous metal with a lower melting point (temperature) than that of the base metal is melted without melting the base metal.

A) Pressure welding
B) Vertical welding
C) Undercutting
D) Brazing

Question 38

The ____ is obtained by mixing slightly more oxygen than acetylene.

A) torch flame
B) neutral flame
C) oxidizing flame
D) carburizing flame

Question 39

________ is done with silicon bronze wire and 100% argon gas.

A) Fusion welding
B) MIG brazing
C) TIG welding
D) Hard welding