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Safety

True/False
Indicate whether the statement is true or false.
 

 1. 

Welding is an efficient and flexible means of fabrication used in industry today.
 

 2. 

Welding is a more expensive process compared to other methods of joining materials.
 

 3. 

Welding can be used to repair farm, mining, and construction equipment.
 

 4. 

Oxyfuel welding processes use heat from the combustion of a mixture of oxygen and a fuel gas for welding.
 

 5. 

The gas metal arc welding process does not require a shielding gas.
 

 6. 

Welding as an occupation does not require specific training.
 

 7. 

Some welding applications require a welder to be certified.
 

 8. 

Welding requires good eyesight and eye-hand coordination.
 

 9. 

Gas tungsten arc welding was developed to weld magnesium and aluminum on World War II fighter planes.
 

 10. 

The powdered core of a flux-cored electrode contains elements that break down in the heat of the arc to form shielding gas.
 

 11. 

Every year, thousands of welders are injured due to carelessness, lack of knowledge, or indifference to safety regulations.
 

 12. 

All safety practices should be followed when arc welding.
 

 13. 

An accident should always be reported and documented, regardless of how minor it may be.
 

 14. 

Any focus away from the job may result in an accident, causing injury to the welder and/or damage to property and equipment.
 

 15. 

Attempting to operate a piece of equipment without instruction may not only damage the equipment, it could result in serious injury.
 

 16. 

A malfunction in welding equipment should be repaired by the welder as quickly as possible.
 

 17. 

Some welding processes do not require a well-ventilated area.
 

 18. 

When welding is completed, the welding machine should be turned OFF.
 

 19. 

Operating welding cables above their rated capacity results in faster welding speeds.
 

 20. 

A fire extinguisher should be accessible in locations where welding is done.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 21. 

The ___ welding process was used before the gas tungsten arc welding process was developed.
a.
acetylene
b.
oxyacetylene
c.
shielded metal
d.
none of the above
 

 22. 

___ may be replaced by MAPP or natural gas in some welding applications.
a.
Oxyacetylene
b.
Acetylene
c.
Resistance
d.
all of the above
 

 23. 

The ___ arc welding process deposits molten metal as the electrode is consumed into the weld joint.
a.
shielded metal
b.
oxyfuel
c.
flux-cored
d.
gas tungsten
 

 24. 

The ___ welding process is known for its mobility and flexibility.
a.
shielded metal arc
b.
gas metal arc
c.
resistance
d.
none of the above
 

 25. 

A course in ___ is helpful to a person considering a career as a welder.
a.
mathematics
b.
blueprint reading
c.
metals
d.
all of the above
 

 26. 

When selecting a welding process for a particular job, ___.
a.
identify the types of metals to be joined
b.
determine the costs involved
c.
determine the nature of the products to be fabricated
d.
all of the above
 

 27. 

The ___ welding process is used primarily for high-production welding.
a.
oxyacetylene
b.
shielded metal arc
c.
gas tungsten arc
d.
gas metal arc
 

 28. 

Nearly two-thirds of all welders work in the ___ industries.
a.
transportation and automotive
b.
equipment and metal products
c.
machining and fabrication
d.
all of the above
 

 29. 

The gas metal arc welding process ___.
a.
uses oxygen as a shielding gas
b.
deposits weld metal at a slower rate than shielded metal arc welding
c.
uses a continuous wire electrode
d.
all of the above
 

 30. 

A skilled welder ___.
a.
must be able to recognize weld defects
b.
reads prints and interprets weld symbols
c.
has knowledge of the properties of metals
d.
all of the above
 

 31. 

___ is not a basic rule that contributes to the safe handling of oxyacetylene equipment.
a.
Opening cylinder valves slowly
b.
Keeping heat, flame, and sparks away from combustibles
c.
Preventing oxygen and acetylene leaks
d.
Protecting the equipment from rust with a coating of oil
 

 32. 

A respirator is used when welding metals that give off ___ fumes.
a.
electrode
b.
oxygen
c.
toxic
d.
acetylene
 

 33. 

To ensure a safe work site when welding, ___.
a.
report all injuries
b.
never attempt to operate any equipment without proper instruction
c.
always practice good safety habits
d.
all of the above
 

 34. 

When using oxygen and acetylene cylinders, open the valves ___.
a.
quickly
b.
slowly
c.
with a pair of pliers
d.
none of the above
 

 35. 

A hot-work permit is required whenever ___.
a.
hot welding gases and fumes could displace life-supporting oxygen
b.
welding or cutting in a confined space where elevated temperatures pose a threat of heat exhaustion
c.
arc welding operations are performed indoors
d.
open flames, heat, or sparks may cause a fire or explosion
 

 36. 

Accidents occur because of ___.
a.
indifference to regulations
b.
lack of information
c.
carelessness
d.
all of the above
 

 37. 

For the safe operation of welding equipment, ___.
a.
shut OFF the power when welding is completed
b.
be sure the welding machine is equipped with a conveniently located power disconnect switch
c.
turn power OFF before changing polarity
d.
all of the above
 

 38. 

Proper protective clothing is required when welding or cutting to prevent ___ from contacting the welder.
a.
sparks that may cause serious burns
b.
metal particles that are extremely dangerous to the eyes
c.
hot metal that may cause burns
d.
all of the above
 

 39. 

Stainless steels require special attention to ventilation because they produce ___ fumes when welded.
a.
zinc
b.
hexavalent chromium
c.
manganese
d.
beryllium
 

 40. 

A Class ___ fire is caused by most combustible materials such as wood, paper, rubber, plastic, and cloth.
a.
A
b.
B
c.
C
d.
K
 



 
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