NCCER Core Module 2 Exam Questions and Answers 100% Correct Graded A+ 2026/27
The conducting connection between electrical equipment or an electrical circuit and the earth -
Ground
One of the most common safety grounding systems used to protect you from incidental electrical
shock - 3 wire system
A more common feature used on corded tools to prevent electrical shock and also can only be
connected to a polarized receptical - double insolated tools
The joining of metal parts by fusion, in which the necessary heat is produced by means of an
electric arc. - arc welding
What type of eye protection must be used by welders - Tinted goggles
If a noise level is so great that you have to raise your voice to be heard, how far should a person
be away from you to use hearing protection - 2 feet
Special filters designed to capture very small particles. - High-efficiency particulate
arrestance (HEPA) filters
What mask should you use if you are in areas you might inhale dust or other solid particles -
Half mask or mouthpiece
, If you come in contact with someone's blood how long should you wait before washing, make
sure to notify your supervisor right away - Immediately
Life threatening hazard caused by heat - Heat stroke
What results when your body temperatures drops a few degrees below normal and you begin to
shiver uncontrollably and become weak - Cold stress
A protective screen set up around a welding operation designed to safeguard workers not directly
involved in that operation. - Welding curtain
The damage that can be done to eyes after even brief exposure to ultraviolet light from arc
welding. A flash burn requires medical attention. - Flash burn
Fire has been described as having three components - heat, oxygen, fuel
A confined space that has been evaluated and found to have actual or potential hazards, such as a
toxic atmosphere or other serious safety or health hazard. Workers need written authorization to
enter a permit-required confined space. - Permit-required confined space
A formal procedure for taking equipment out of service and ensuring that it cannot be operated
until an authorized person has removed the lock and/or warning tag. - Lockout/tagout
(LOTO)
The conducting connection between electrical equipment or an electrical circuit and the earth -
Ground
One of the most common safety grounding systems used to protect you from incidental electrical
shock - 3 wire system
A more common feature used on corded tools to prevent electrical shock and also can only be
connected to a polarized receptical - double insolated tools
The joining of metal parts by fusion, in which the necessary heat is produced by means of an
electric arc. - arc welding
What type of eye protection must be used by welders - Tinted goggles
If a noise level is so great that you have to raise your voice to be heard, how far should a person
be away from you to use hearing protection - 2 feet
Special filters designed to capture very small particles. - High-efficiency particulate
arrestance (HEPA) filters
What mask should you use if you are in areas you might inhale dust or other solid particles -
Half mask or mouthpiece
, If you come in contact with someone's blood how long should you wait before washing, make
sure to notify your supervisor right away - Immediately
Life threatening hazard caused by heat - Heat stroke
What results when your body temperatures drops a few degrees below normal and you begin to
shiver uncontrollably and become weak - Cold stress
A protective screen set up around a welding operation designed to safeguard workers not directly
involved in that operation. - Welding curtain
The damage that can be done to eyes after even brief exposure to ultraviolet light from arc
welding. A flash burn requires medical attention. - Flash burn
Fire has been described as having three components - heat, oxygen, fuel
A confined space that has been evaluated and found to have actual or potential hazards, such as a
toxic atmosphere or other serious safety or health hazard. Workers need written authorization to
enter a permit-required confined space. - Permit-required confined space
A formal procedure for taking equipment out of service and ensuring that it cannot be operated
until an authorized person has removed the lock and/or warning tag. - Lockout/tagout
(LOTO)
