Title: Final
Course: Industrial Wiring (IC 104-IC 104) > Section: Assessments

Q: If you have a circuit of over 100 Amps or a conductor larger than 1 AWG, what column should be used in the NEC table for finding the ampacity of the cable you are using?
- 60 degree C
- 75 degree C
- 90 degree C
- only insulation material determines the column to use
A: 60 degree C

Q: Although ____ are more expensive to install, they provide many advantages that direct burial installations do not.
- telephone poles
- contoured paths
- pole caps
- underground raceways
A: telephone poles

Q: After the conductors have been installed in conduits or raceways, it is accepted practice to test the installation for grounds and shorts. This test requires a(n) ____.
- faradmeter
- ammeter
- voltmeter
- ohmmeter
A: faradmeter

Q: The motor overload size is to be determined by using the current listed ____.
- on the nameplate
- in the NEC tables
- in the UL tables
- on the stator
A: on the nameplate

Q: A one-horsepower motor will have a full-load current of ____ amperes when connected to 90 volts dc.
- 6.8
- 9.5
- 9.6
- 12.2
A: 6.8

Q: A 25-horsepower, three-phase induction motor has a nameplate rating of 32 amperes. The nameplate also shows a temperature rise of 30 degrees C. What is the overload size for this motor in amperes?
- 20
- 30
- 40
- 50
A: 20

Q: A contactor is similar to a ____ in that completing the control circuit will energize a coil that closes a set of contacts.
- toggle switch
- motor starter
- pressure switch
- photocell
A: toggle switch

Q: By dividing the ____ rating of a lamp by the watts rating, a value called the efficacy of the lamp is determined.
- volt
- lumen
- ampere
- color
A: volt

Q: The ____ is used to ensure that the site lighting is turned off during the daylight hours.
- underground cable
- contactor
- pressure switch
- photocell
A: underground cable

Q: A ____ is used to deactivate the lighting after the last worker has left.
- toggle switch
- photocell
- pressure switch
- time clock
A: toggle switch

Q: The phasor rotation of a negative harmonic causes an induction motor to produce ____.
- positive feedback
- a high magnetic field
- less torque
- more torque
A: positive feedback

Q: The most accurate method for determining whether there is a harmonics problem is to use a(n) ____.
- transformer
- average value ammeter
- true rms ammeter
- harmonic analyzer
A: transformer

Q: Outlet boxes and device boxes use their nominal measurement as their ____ size.
- bench
- knockout
- designated
- trade
A: bench

Q: One way to deal with harmonic problems is to install a ____ neutral conductor.
- larger
- smaller
- common
- triplen
A: larger

Q: A factor that determines the amount of current a conductor is permitted to carry is the type of ____ used, which is the nonconductive covering around the wire.
- insulation
- raceway
- busway
- voltage
A: insulation

Q: A conductor made out of which of the following materials is allowed to carry the most current, if size and insulation type are held constant?
- copper-clad aluminum
- silicone
- aluminum
- copper
A: copper-clad aluminum

Q: If conductors are to be used in a location with a higher ambient temperature, the ampacity of the conductor must be ____.
- kept constant
- doubled
- reduced
- increased by 20 amperes
A: kept constant

Q: Twelve 14 AWG copper conductors with type RHW insulation are to be installed in conduit in an area with an ambient temperature of 110 degrees F (43 degrees C). What will be the ampacity of these conductors?
- 4.1 amperes
- 8.2 amperes
- 16.4 amperes
- 32.8 amperes
A: 4.1 amperes

Q: If you have a raceway with 35 current-carrying conductors, by what adjustment factor must you multiply the ampacity?
- 0.2
- 0.3
- 0.4
- 0.5
A: 0.2

Q: Materials that increase their resistance with an increase of temperature have a ____ coefficient of temperature.
- decimal
- constant
- positive
- negative
A: decimal

Q: Currents of a three-phase system are ____ degrees out of phase with each other.
- 60
- 90
- 120
- 180
A: 60

Q: The full-load current for a three-phase, 5 horsepower motor connected to 208 volts is?
A: 16.7 Amps

Q: The National Fire and Protection Association and the NEC are the leaders in setting the standards in the electrical field?
- True
- False
A: True

Q: What does the acronym AWG stand for in wiring?
A: American Wire Gauge

Q: What is the color of the grounding conductor?
A: Green

Q: What is the full-load current for a 2 horsepower single-phase motor running on 115V?
A: 24 Amps

Q: What is the maximum number of 12 gauge wires that can be put in a device box that is 4" x 2 1/8" x 2 1/8"?
A: 6

Q: What is the trade size of a round/octagonal box that is 4" x 1 1/4"?
A: 12.5 cu in

Q: What the minimum size copper wire that would be needed for a single-phase 10 horsepower motor connected to 115 volts? (over 100 Amps)
A: 1 gauge

Q: You are connecting a three-phase motor to 230 volts and it is a 5 horsepower motor, what is the minimum wire size that you need if you have copper wire? (under 100Amps)
A: 12 AWG