Principles of Welding NC3 Pre Test

What is the definition of welding?

• Joining process that uses heat, pressure, and/or chemicals to fuse together two materials together permanently.

• Process that uses heat to fuse metal together

• Joining process that uses heat and pressure but materials are not permanent.

What is the definition of arc welding?

• Joining process that uses heat, pressure, and/or chemicals to fuse together two materials together permanently.

• Process that uses heat to fuse metal together

• Joining process that uses heat and pressure but materials are not permanent.

• joins metals together permanently by heating them with an arc, with or without pressure and/or filler metal

Fasteners are widely used in fabrication in metalworking, which options below are fasteners found in metalworking?

• Rivets

• Bolts

• Screws

• Adhesives

Which of these statements best describes soldering?

• uses bonding materials that melt below 840 degrees

• Fabrication process where materials melt above 840 degrees

• • Cables (or leads) carry electric current from power source to clamp and flux coated consumable electrode (or stick).

• Uses a continuous fed consumable metal wire electrode fed through a semi-automatic gun or fully automated welding head with external supplied shielding gas to protect weld.

Which of these statements best describes brazing?

• uses bonding materials that melt below 840 degrees

• Fabrication process where materials melt above 840 degrees

• • Cables (or leads) carry electric current from power source to clamp and flux coated consumable electrode (or stick).

• Uses a continuous fed consumable metal wire electrode fed through a semi-automatic gun or fully automated welding head with external supplied shielding gas to protect weld.

Which of these statements best describes stick welding?

• uses bonding materials that melt below 840 degrees

• Fabrication process where materials melt above 840 degrees

• • Cables (or leads) carry electric current from power source to clamp and flux coated consumable electrode (or stick).

• Uses a continuous fed consumable metal wire electrode fed through a semi-automatic gun or fully automated welding head with external supplied shielding gas to protect weld.

Which of these statements best describes mig welding?

• uses bonding materials that melt below 840 degrees

• Fabrication process where materials melt above 840 degrees

• • Cables (or leads) carry electric current from power source to clamp and flux coated consumable electrode (or stick).

• Uses a continuous fed consumable metal wire electrode fed through a semi-automatic gun or fully automated welding head with external supplied shielding gas to protect weld.

Which of these statements best describes Flux Core Arc Welding?

• uses bonding materials that melt below 840 degrees

• Fabrication process where materials melt above 840 degrees

• • Cables (or leads) carry electric current from power source to clamp and flux coated consumable electrode (or stick).

• Uses a continuous fed consumable metal wire electrode fed through a semi-automatic gun or fully automated welding head with external supplied shielding gas to protect weld.

• • Uses a continuous fed consumable tubular metal wire electrode that contains a flux core

Which of these statements best describes Gas Tungsten Arc Welding?

• uses bonding materials that melt below 840 degrees

• Fabrication process where materials melt above 840 degrees

• • Cables (or leads) carry electric current from power source to clamp and flux coated consumable electrode (or stick).

• Uses a non-consumable tungsten electrode to produce the electric arc and supplied gas

• • Uses a continuous fed consumable tubular metal wire electrode that contains a flux core

In the terms of welding, what is the definition of electricity?

• • s defined in applied terms as the flow of electrons.

• is electromotive force (EMF), in applied terms it can be described as electrical pressure.

• is the amount of electricity, the actual number of electrons flowing. Amperage is also called “current” or “load.”

• is a measure of electrical power