Licensed Electrical Contractor FREE Licensed Electrical Contractor Code, Theory, and Calculations Questions and Answers 3

Question 1

What is the standard unit load per square foot used for general lighting in office buildings per the NEC?

Accepted Answer

3.5 VA

Answer

2 VA

Answer

1.5 VA

Answer

5 VA

Question 2

How many current-carrying conductors can occupy a single conduit before derating factors must be applied per the NEC?

Accepted Answer

3

Answer

4

Answer

6

Answer

2

Question 3

What is the power factor of a purely resistive AC circuit?

Accepted Answer

1.0

Answer

0.8

Answer

0.5

Answer

0

Question 4

Per the NEC, what is the minimum height above a rooftop for service drop conductors with a roof slope greater than 4 inches in 12 inches?

Accepted Answer

3 feet

Answer

8 feet

Answer

5 feet

Answer

18 inches

Question 5

What is the total impedance of a series RLC circuit with R = 30 ohms, XL = 50 ohms, and XC = 10 ohms?

Accepted Answer

50 ohms

Answer

70 ohms

Answer

30 ohms

Answer

90 ohms

Question 6

What is the maximum number of 90-degree bends permitted between pull points in a conduit run per the NEC?

Accepted Answer

4

Answer

3

Answer

2

Answer

5