Welding Safety and Techniques Quiz

What does PPE stand for in welding safety?

• Personal Protective Equipment

• Professional Protective Environment

• Personal Performance Evaluation

• Proper Protective Elements

Answer explanation

PPE stands for Personal Protective Equipment, which is essential in welding safety to protect workers from hazards such as sparks, heat, and harmful fumes.

The color of an oxygen cylinder is usually:

• Red

• Green

• Black

• Yellow

Answer explanation

The color of an oxygen cylinder is typically green, which is standardized in many countries to ensure safety and easy identification. Other colors represent different gases, making green the correct choice for oxygen.

Which polarity is commonly used for E7018 in SMAW?

• DCEN

• DCEP

• AC only

• Both AC and DCEN

Answer explanation

E7018 is typically used with DCEP (Direct Current Electrode Positive) polarity, which provides better penetration and a stable arc, making it ideal for this type of electrode in Shielded Metal Arc Welding (SMAW).

A fire extinguisher labeled “ABC” is safe for:

• Only paper fires

• Electrical, flammable liquid, and combustible fires

• Metal fires only

• Only welding gas fires

Answer explanation

An ABC fire extinguisher is designed to combat electrical fires, flammable liquids, and combustible materials. It is not limited to just paper or specific types of fires like metal or welding gas.

Convert 5/16” to decimal:

• 0.3125

• 0.4375

• 0.2500

• 0.5000

Answer explanation

To convert 5/16 to decimal, divide 5 by 16. This gives 0.3125, which is the correct answer. The other options do not match this calculation.

In oxy-fuel cutting, the preheat flame is adjusted until:

• Feather disappears

• Cone turns green

• Gas flow stops

• No sparks are visible

Answer explanation

In oxy-fuel cutting, the preheat flame is adjusted until the feather of the flame disappears, indicating optimal temperature for cutting. This ensures efficient ignition of the metal without excessive heat.

What is the tensile strength of an E6010 electrode?

• 60,000 psi

• 70,000 psi

• 80,000 psi

• 100,000 psi

Answer explanation

The tensile strength of an E6010 electrode is 60,000 psi, which is the correct choice among the options provided. This value indicates the maximum stress the electrode can withstand before failing.

The abbreviation “IP” on a blueprint means:

• Interpass

• Inside Pitch

• Inspection Point

• Initial Pass

Answer explanation

The abbreviation 'IP' on a blueprint stands for 'Interpass', which refers to the process of inspecting the weld between passes in welding. This ensures quality and adherence to specifications.

Which joint type is created when two plates are edge to edge?

• Lap joint

• Tee joint

• Butt joint

• Corner joint

Answer explanation

A butt joint is formed when two plates are joined edge to edge without any overlap. This type of joint is commonly used in welding and woodworking, making it the correct answer to the question.

If a student welds 12” per minute for 15 minutes, how many inches total are welded?

• 120”

• 150”

• 160”

• 180”

Answer explanation

To find the total inches welded, multiply the welding rate by the time: 12 inches/minute × 15 minutes = 180 inches. Therefore, the correct answer is 180".