Deck 4: Introduction to Welding

Question 1

Soldering and brazing both involve using a filler material that melts at a temperature below the melting point of the piping material.

Answer 1

True

Question 2

Arc welding can create sunburn-like skin damage.

Answer 2

True

Question 3

A single size torch tip can handle most jobs.

Answer 3

False

Question 4

The higher the number of lens shade, the darker the lens.

Question 5

Brazing flux should be put on the inside and outside of the fitting socket on large diameter pipe to assist you in knowing the temperature of the assembly as it is heated.

Question 6

The most widely used fuel gas for welding and cutting steel is

A) propane.
B) methane.
C) acetylene.
D) MAPP.

Question 7

Welding hazards include asphyxiation, burns, fires, and explosions.

Question 8

____ fueled the need for mass production and the rapid growth and development of welding.

A) The two World Wars
B) The automotive industry
C) The shipbuilding industry
D) The oil and mining industries

Question 9

Gas cylinders should be moved only with the transport caps in place.

Question 10

Since sparks are small, they can only travel a short distance.

Question 11

A person assigned to be the "fire watch" or "spotter" should not be assigned any other duties that would distract him/her.

Question 12

Welding, soldering, and brazing are about equal in the weld strength developed for pipe joints.

Question 13

Acetylene tanks should never be laid on their sides.

Question 14

Acetylene tanks should be opened all the way to aid in flow.

Question 15

It is good practice to use a short, light hose for the final connection to the torch handle.

Question 16

Only a welder in training needs a fire watch.

Question 17

Flux aids in keeping the joining surface clean during heating, and it aids the flow of the filler material.

Question 18

Gauges are necessary on regulators to assist in setting the torch pressure and also to indicate the approximate amount of gas remaining in the cylinder.

Question 19

Sunglasses can protect your eyes while welding.

Question 20

The special technique developed in the late 1800s that forms the basis for welding as we think of it today is

A) oxy-acetylene welding
B) fabrication welding
C) mineral welding
D) forge welding

Question 21

____ receive gas from the supply cylinders and deliver it to the hoses at a closely controlled pressure.

A) MAPP cylinders
B) Pressure gauges
C) Hoses
D) Pressure regulators

Question 22

The gas that combines with other elements in all combustion processes is

A) propane.
B) methane.
C) oxygen.
D) acetylene.

Question 23

Eye protection is necessary for

A) welding.
B) brazing.
C) soldering.
D) all of the above.

Question 24

Acetylene is stored in cylinders that contain

A) methane.
B) acetone.
C) nitrogen.
D) oxygen.

Question 25

An oxy-acetylene flame reaches a temperature of about

A) 3600°F.
B) 4800°F.
C) 6300°F.
D) 6900°F.

Question 26

Oxygen cylinders are painted

A) red.
B) green.
C) black.
D) white.

Question 27

The ____ flame is cooler than oxy-acetylene, so it is not suitable for welding.

A) propane
B) MAPP
C) pure oxygen
D) methane