1. Electricity produces work when the electrons in a conductor

   A. become positive.
    B. stop all movement.
    C. stay negative.
    D. are placed in motion.
       
     
2. The electrician's main source of information about electrical installation rules and regulations is the

   A. National Electrical Code.
    B. National Electrical Safety Code.
    C. State Safety Code.
    D. Occupational Safety and Health Act.
       
     
3. The best time to install conduit is when you're

   A. snaking wire through finished walls.
    B. wiring new construction with open walls.
    C. removing a circuit from a breaker panel.
    D. converting a fuse box to a breaker panel.
       
     
4. An underground electrical distribution system would most likely be found

   A. under a river.
    B. under a moist tract of farmland.
    C. in a rural area.
    D. in a downtown area.
       
     
5. Which of the following electrical characteristics remains the same during normal residential electrical use?

   A. The current flow
    B. The wattage consumption
    C. The voltage level
    D. The meter reading
       
     
6. A service drop to a residence is connected to the utility's _______ voltage.

   A. primary
    B. secondary
    C. transmission
    D. subtransmission
       
     
7. The chief purpose of a service panel in a house is to

   A. keep electrical hazards localized.
    B. keep the meter working correctly.
    C. provide automatic circuit protection.
    D. connect the service drop to the house.
       
     
8. How many outlets are allowed on a 240 V branch circuit?

   A. 1
    B. 3
    C. 6
    D. 9
       
     
9. A home electrical system is joined to the electric company's system at the junction of the

   A. entrance head and service drop.
    B. black and red wires in the meter.
    C. neutral strip in the panelboard.
    D. panelboard and service drop.
       
     
10. Electrical pressure is also called

   A. voltage.
    B. amperage.
    C. conductance.
    D. resistance.
       
     
11. The hot wires in a service entrance panel are covered with _______ insulation.

   A. green or white
    B. black or green
    C. white or red
    D. red or black
       
     
12. The electric meter for a new house is furnished by the

   A. contractor.
    B. electrician.
    C. electric company.
    D. homeowner.
       
     
13. A small appliance circuit will be protected by a circuit breaker rated at

   A. 15 A.
    B. 20 A.
    C. 30 A.
    D. 50 A.
       
     
14. A 120 V general-purpose circuit should have circuit breakers or fuses with values of

   A. 15 A or 20 A.
    B. 50 A.
    C. 100 A.
    D. 120/240 A.
       
     
15. Which of the following voltages would most likely be used as a primary distribution voltage by an electric utility company?

   A. 120 V
    B. 440 V
    C. 4,160 V
    D. 69,000 V
       
     
16. Which of the following wire gage sizes is the thickest?

   A. 14
    B. 8
    C. 0
    D. -33
       
     
17. A new home will have a service entrance with a minimal current rating of

   A. 50 amperes.
    B. 100 amperes.
    C. 150 amperes.
    D. 200 amperes.
       
     
18. The main consideration when choosing an appropriate outlet box is for the box to

   A. provide a good ground.
    B. have handy mounting brackets.
    C. fit a template hole.
    D. have the correct capacity.
       
     
19. A three-wire installation provides a power source for a _______ service.

   A. 50 V
    B. 120/240 V
    C. 1,000 V
    D. 4,160 V
       
     
20. Which of the following formulas would you use to calculate the power requirements of an electrical load?

   A. P = E/I
    B. P = I × R
    C. P = E × I
    D. P = E/R