Question

1. The main purpose of a service panel in a house is to A. keep the meter working correctly.

B. provide automatic circuit protection and prevent fires.
C. keep electrical hazards localized.
D. connect the service drop to the house.
2. The electric meter for a new house is furnished by the A. contractor.
B. electric company.
C. homeowner.
D. electrician.
3. Electrical pressure is also called A. resistance.
B. conductance.
C. amperage.
D. voltage.
4. The electrician's main source of information about electrical installation rules and regulations is the A. Occupational Safety and Health Act.
B. National Electrical Code.
C. National Electrical Safety Code.
D. State Safety Code.
5. Which of the following is the main consideration when choosing an appropriate outlet box? A. The box should have handy mounting brackets.
B. The box should provide a good ground.
C. The box should have the correct capacity.
D. The box should fit a template hole.
6. Which of the following formulas would you use to calculate the power requirements of an electrical load?

A. P = E/I B. P = E/R
C. P = E × I D. P = I × R
7. The service drop for a residence is connected to the utility company’s ________ voltage. A. transmission
B. subtransmission
C. secondary
D. primary
8. How many outlets are allowed on a 240 V branch circuit? A. 1
B. 6
C. 3
D. 9
9. An underground electrical distribution system would most likely be found A. in a rural area.
B. in a downtown urban area.
C. under a river.
D. under a moist tract of farmland.
10. A home electrical system is joined to the electric company's system at the junction of the A. neutral strip in the panelboard.
B. black and red wires in the meter.
C. service entrance head and service drop.
D. panelboard and service drop.
11. Which of the following would be a likely primary distribution voltage used by an electric utility company?
A. 120 V B. 240 V C. 69000 V D. 4160 V
12. A three-wire installation provides a power source for a ________ service. A. 50 V
B. 4,160 V
C. 120/240 V
D. 1,000 V

13. Which of the following electrical characteristics remains the same during normal residential electrical use?
A. The wattage consumption B. The voltage level
C. The current flow
D. The meter reading
14. A 120 V general-purpose circuit should have circuit breakers or fuses with values of A. 50 A.
B. 15 A or 20 A.
C. 120/240 A.
D. 100 A.
15. The main disconnect in a service panel is a(n) A. ammeter.
B. circuit breaker.
C. receptacle.
D. bus bar.


Please help i have no intentions on learning this so i just need help

Answer 1

1. C - to keep electrical hazards localized. A service panel or breaker box is a steel box that handles multiple circuit breakers wired to circuits that diffuse power throughout your home.

2. B - electric company.

3. D - voltage.

4. B - National Electrical Code.

5. C. The box should have the correct capacity. That is appropriate for the devices and wires that will conform to it.

6. B. P = E/R

7. D. primary. The utility is on the primary (high voltage) side of it and your house is on the secondary (low voltage) side.

8. A. 1

9. B. in a downtown urban area.

10. C. service entrance head and service drop.

11. C. 69000 V

12. C. 120/240 V

13. B. The voltage level

14. B. 15 A or 20 A.

15. B. circuit breaker. Any kind of disconnect are like an actual switch, a fuse, a solid state (transistor) switch etc.