Telecommunications Quiz

Which of the following materials is considered the best conductor but is too expensive for widespread use?

• Aluminium

• Copper

• Silver

• Polymers

What does high resistance in a material indicate?

• Good conductor

• Good insulator

• High capacitance

• High voltage

Which of the following is NOT a parameter that a multimeter can test for?

• Voltage

• Current

• Resistance

• Frequency

According to Ohm's law, what is the relationship between voltage (V), current (I), and resistance (R)?

• V = IR

• V = I/R

• V = R/I

• V = I + R

What is an appropriate testing device to see if there has been a breakdown in insulation?

• Using a voltmeter

• Using a cathode ray oscilloscope

• Using a megohmmeter

• Using a multimeter

Why is copper widely used in electrical applications?

• It is the best conductor

• It is the cheapest metal

• It is both a good conductor and is suitable for drawing into wires

• It is resistant to corrosion

What process is used to remove impurities from pure copper?

• Melting

• Electrolysis

• Chemical treatment

• Mechanical filtration

What impact do small amounts of impurities have on copper?

• They improve its conductivity

• They have no impact

• They can have large negative impacts on conductivity

• They make it more ductile

What is a characteristic of Copper Beryllium alloy?

• It is an inexpensive alloy

• It has high tensile strength

• It is more conductive than copper

• It is more ductile than copper

How must Copper Beryllium be hardened?

• By melting and cooling

• Through precipitation hardening/natural aging

• Through full annealing

• By quench hardening