Week 1 Course Work
10. The unit of electrical resistance in the circuit is known as the ampere. True False
False
19. Paint used on electrical enclosures functions as a conductor. True False
False
9. The National Electrical Code (NEC®) only defines electrical circuits that are required to be grounded. True False
False
18. Bonding must be accomplished around conduit connections whenever the fault-current return path is suspect, as well as when specifically required by NEC®. True False
True
20. The electrical system is generally considered to be the source of electrical energy. True False
True
8. The grounded conductor is defined as one that is intentionally grounded or connected to earth. True False
True
4. The unit of electrical current is the ____. a. ampere b. volt c. ohm d. watt
a. ampere
12. In its simplest form, ____ completes a path through which fault current can flow. a. bonding b. grounding c. bending d. shunting
a. bonding
3. A ____ circuit is one in which there is more than one path for current to flow in. a. neutral b. parallel c. series d. resistive
b. parallel
14. The ____ of an article tells us what is contained in an article. a. definitions b. scope c. requirements d. discussion
b. scope
2. A grounding ____ is a conducting object through which a direct connection to earth is established. a. conductor b. jumper c. electrode d. generator
c. electrode
11. Electrical systems that are ____ must be connected to the earth in a way that will (1) limit the voltage imposed by lightning, line surges, or unintentional contact with higher-voltage lines and (2) stabilize the voltage of the system to the earth during normal operations. a. cycled b. shunted c. grounded d. bonded
c. grounded
1. A bonding ____ is a conductor, made of copper or aluminum, used to ensure electrical conductivity between metal parts that must be electrically connected. a. electrode b. shunter c. jumper d. transformer
c. jumper
5. Which of the following formulas represents Ohm's law? a. E (volts) = I (amperes) ÷ R (ohms) b. E (volts) = I (amperes) - R (ohms) c. E (volts) = I (amperes) + R (ohms) d. E (volts) = I (amperes) × R (ohms)
d. E (volts) = I (amperes) × R (ohms)
15. ____ current occurs when the system neutral is grounded improperly downstream from the service equipment. a. Positive b. Negative c. Phased d. Objectionable
d. Objectionable
13. The purpose of connecting non-current-carrying conductive materials to earth is to limit the ____ on these materials. a. interference b. maximum amperage c. resistivity d. voltage to ground
d. voltage to ground
16. Some manufacturers of data processing equipment refer to a conduit or branch-circuit as a(n)__________ because of the electrical interference or noise that travels on this path.
dirty ground
Soil resistivity is determined largely by its content of __________ , which consist of moisture, minerals, and dissolved salts.
electrolytes
17. The NEC® is generally written in "__________ style," stating how an installation must be made, rather than "performance style," stating general goals to be achieved.
prescriptive
6. In a(n) __________, there is only one path for current to flow.
series
