Conduction

Question 1

What is the term used to identify an AC voltage that would cause the same heating in a resistor as a corresponding value of DC voltage?

Answer 1

Root Mean Square (RMS)

Question 2

What happens to reactive power in a circuit that has both inductors and capacitors?

Answer 2

It alternates between magnetic and electric fields and is not dissipated.

Question 3

Halving the cross-sectional area of a conductor will:

Answer 3

Double the resistance

Question 4

Which of the following groups is correct for listing common materials in order of descending conductivity?

Answer 4

Silver, copper, aluminum, iron, and lead.

Question 5

How do vou compute true power (power dissipated in the circuit) in a circuit where AC voltage and current are out of phase?

Answer 5

• Multiply apparent power times the power factor

Question 6

Assuming a power source to have a fixed value of internal resistance, maximum power will be transferred to the load when:

Answer 6

The load impedance equals the internal impedance of the source.