Chicago Electrical Exam
123 Questions
| Total Attempts: 1258
Chicago Electrical Contractor Prep-Exam
Questions and Answers
- 1.A motor draws 165 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #2/0, what would the voltage drop be?
- A.
4.4
- B.
5.7
- C.
6.5
- 2.A motor draws 83 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #3, what would the voltage drop be?"
- A.
5.9
- B.
7.2
- C.
8.0
- 3.A motor draws 21amps at a voltage of 230 with a feeder ft. length of 160. The copper wire (75 degree C) size desired is #10, Which minimum size copper wire is permissible by code to use?"
- A.
#10
- B.
#8
- C.
#6
- 4.A motor draws 32 amps at a voltage of 230 with a feeder ft. length of 150. The copper wire (75 degree C) size desired is #8, Which minimum size copper wire is permissible by code to use?"
- A.
#8
- B.
#6
- C.
#4
- 5.A motor draws 85 amps at a voltage of 230 with a feeder ft. length of 160. The copper wire (75 degree C) size desired is #3, Which minimum size copper wire is permissible by code to use?
- A.
3
- B.
2
- C.
1
- 6.A motor draws 21 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #10, Which minimum size copper wire is permissible by code to use?
- A.
#10
- B.
#8
- C.
#6
- 7.A motor draws 47 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #8, Which minimum size copper wire is permissible by code to use?
- A.
#8
- B.
#6
- C.
#4
- 8.A motor draws 165 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #2/0, Which minimum size copper wire is permissible by code to use?
- A.
1/0
- B.
2/0
- C.
3/0
- 9.A motor draws 83 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #3, Which minimum size copper wire is permissible by code to use?
- A.
3
- B.
2
- C.
1
- 10.For purpose of computing service loads, the voltages not to be used is, 120/220V
- A.
True
- B.
False
- 11.The unit lighting load that is specified for, occupancy use in the code book constitutes the required lighting load for each square foot (0.093 mz) of floor area.
- A.
True
- B.
False
- 12.Each floor area of a building, dwelling unit, or other area involved shall be, computed from the interior wall dimensions to determine the total square footage for, service load calculations.
- A.
True
- B.
False
- 13.The computed floor area of dwelling units, shall include open or enclosed porches.
- A.
True
- B.
False
- 14.In all occupancies, what is the minimum design load to include for, each general purpose outlets.
- A.
120 volt-amperes
- B.
180 volt-amperes
- C.
1500 volt-amperes
- 15.Outlets serving switchboards, and switchgear frames in telephone exchanges need not be included, in minimum design load computations.
- A.
True
- B.
False
- 16.An outlet for a specific appliance not covered in Article 220 shall have the computed ampere rating based on what?
- A.
Appliance rated amperes
- B.
180 volt-amperes for outlet
- C.
2000 watts per appliance
- 17.What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for a Barber shop that, you can use?
- A.
2
- B.
3
- C.
3 1/2
- 18.What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for, a Hospital that you can use?
- A.
2
- B.
3
- C.
3 1/2
- 19.What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for a School that, you can use?
- A.
2
- B.
3
- C.
3 1/2
- 20.What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for an auditorium that, you can use?
- A.
1
- B.
2
- C.
3
- 21.What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for a Court room that, you can use?
- A.
2
- B.
3
- C.
3 1/2
- 22.The volt-amperes of outlets for heavy duty lamp holders shall be computed at a minimum of,
- A.
180
- B.
120
- C.
600
- 23.When a service voltage exceeds 15,000 volts between conductors enter a building, they shall terminate in a?
- A.
Metal enclosed switchgear compartment
- B.
A transformer vault
- C.
A metal enclosed switchgear compartment or a transformer vault
- 24.Additional building services, with a supply voltage of 600 volts or less, are permitted when the capacity requirements are in excess of how many amperes?
- A.
2000
- B.
3000
- C.
4000
- 25.A service supplying a building or other structure can not pass through the interior of another building or other structure.
- A.
True
- B.
False
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