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4: Review Questions
A weld can be achieved through what three methods?
Briefly define the following terms.
A. Tensile strength
B. Ductility
C. Toughness
D. Hardness
True or False?
Welding changes the properties of the metal being welded.
A. True
B. False
What happens to the size of base metal when it is heated?
What can happen when welding a T-joint that is not tack welded or clamped in a welding jig or fixture?
List four ways to reduce stress in a weld.
What type of heat-treatment processes are used to harden some steel alloys?
Define the following terms.
A. Voltage
B. Current
C. Resistance
What are the two measurement systems in common use in the United States?
For each US customary or SI metric unit listed below, write the unit from the other measurement system that corresponds to the given unit of measurement.
Length: inch _____
Mass: pound _____
force: pound _____
Volume: liter _____
Tensile strength: pounds per square inch (psi) _____
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