143 S10 recap

What are the two forms of copper wire?

• A) Solid and Liquid
• B) Single conductor and Multiple strands
• C) Copper and Aluminium
• D) Ductile and Malleable

Which element is copper in the periodic table?

• A) 29th
• B) 27th
• C) 30th
• D) 28th

What are the properties of copper mentioned in the during discussion?

• A) High thermal conductivity
• B) Low ductility
• C) Low thermal expansion
• D) Poor electrical conductivity

What is the difference between a wire and a cable?

• A) A wire is insulated, while a cable is not.
• B) A wire is a single conductor, while a cable has multiple insulated wires.
• C) A wire is used for communication, while a cable is used for electricity.
• D) A wire is made of copper, while a cable is made of aluminum.

How is copper wire manufactured?

• A) By melting copper bars
• B) By hammering copper bars
• C) By extruding copper bars
• D) By rolling copper bars into longer and thinner bars

What is the purpose of passing wires through an extruder?

• A) To make them harder
• B) To make them easier to bend
• C) To insulate and jacket them
• D) To increase their tensile strength

When is solid copper wire typically used?

• A) When flexibility is important
• B) When movement is needed
• C) When little or no movement is needed
• D) When high flex applications are required

What are the main types of copper wires mentioned in the text?

• A) Solid and Stranded
• B) Aluminium and Copper
• C) Insulated and Bare
• D) Ductile and Malleable

What is the advantage of stranded copper wires over solid wires?

• A) Greater flexibility
• B) Higher electrical resistance
• C) Lower thermal conductivity
• D) Reduced surface area

What are the applications of copper wire mentioned in the lesson?

• A) Circuit wiring and Motor windings
• B) Heating elements and Power transmission
• C) Telecommunications cables and Bus bars
• D) All of the above