A1 LT16

Question 1

What is a conductor material?

Answer 1

Material allowing electrical current flow

Question 2

What is the equation to calculate resistivity of a wire?

Answer 2

R = KxL CMA

Question 3

How do you calculate the Circular Mil Area (CMA) for copper bus bar?

Answer 3

Multiplied the Square Mil Area (SM) by 0.7854

Question 4

What is aluminum used for in electrical applications?

Answer 4

Conductor with low tensile strength

Question 5

What does PTC stand for?

Answer 5

Positive Temperature Coefficient

Question 6

What forms can conductors come in?

Answer 6

Bars, tubes, sheets, wire

Question 7

What is the effect of an increase in temperature on materials with PTC?

Answer 7

Rise in resistance

Question 8

What is the effect called that impedes the progress of free electrons in a circuit?

Answer 8

Resistance (R)

Question 9

What does NTC stand for?

Answer 9

Negative Temperature Coefficient

Question 10

What is the basic unit of measurement for resistance?

Answer 10

Ohms

Question 11

How much resistance does a circuit have when a potential difference of 1V and a current of 1A are applied?

Answer 11

1 ?

Question 12

Why is resistance considered detrimental?

Answer 12

converts electrical energy into waste heat

Question 13

Why should conductors have low resistance?

Answer 13

to minimize energy waste

Question 14

What is resistance directly proportional to?

Answer 14

Length

Question 15

What is resistance inversely proportional to?

Answer 15

Cross-sectional area

Question 16

Why do designers of electrical apparatus pay close attention to temperature changes in conductors?

Answer 16

Because resistance varies with temperature.