Introduction to Welding Pretest

How is DC typically derived from AC?

• By using a transformer

• By increasing the voltage

• By decreasing the amperage

• By using a capacitor

What type of welding symbol is used to represent a groove weld?

• Intermittent

• All-around

• Field

• Segment

What is the function of a shielding gas in the welding process?

• To increase resistance

• To decrease voltage

• To protect the weld from atmospheric contamination

• To eliminate the need for filler metals

What do the terms "first angle" and "third angle" refer to in blueprint reading?

• Metal classifications

• Welding positions

• Projection methods

• Cutting processes

What is an advantage of Plasma Arc Cutting (PAC)?

• Slow cutting speed

• Narrow kerf width

• High heat-affected zone

• Limited material compatibility

Tags

NGSS.HS-PS3-3

What is the primary purpose of a fuse or circuit breaker in a welding power supply?

• To increase resistance

• To measure voltage

• To open the circuit

• To protect against overcurrent

Which term refers to the ability of a material to deform under tensile stress before breaking?

• Compressive strength

• Toughness

• Ductility

• Brittleness

Which of the following terms refers to the rate of flow of electric charge?

• Voltage

• Resistance

• Current

• Wattage

Which of the following statements about welding cables is true?

• Weld cables are not important in a welding circuit

• Weld cables should always be oversized for projects

• The resistance in weld cables should be ignored

• Properly sized weld cables should be selected for projects

Tags

NGSS.HS-PS3-3

In welding symbols, what does the reference line indicate?

• The type of weld joint

• Weld size and length

• The weld location

• The tail side of the joint