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All the question's and answer's in this quiz are found in Tom Henry's book, "Calculations Exam Questions and Answers".
1. A 12 kw range has a branch circuit demand of amps. 115/230v single-phase.
- [ ] 33.3
- [ ] 50
- [ ] 52.1
- [ ] 34.8
2. What is the demand on the service for two 14 kw ranges and three 15 kw ranges?
- [ ] 23 kw
- [ ] 20 kw
- [ ] 22 kw
- [ ] none of these
3. A 175 amp fuse is protecting a circuit. What size copper equipment grounding conductor is required?
- [ ] #8
- [ ] #6
- [ ] #10
- [ ] #4
4. The minimum size service conductors for a restaurant requiring a 200 amp service would be THW.
- [ ] #4/0
- [ ] #2/0
- [ ] #250 kcmil
- [ ] #3/0
5. What is the minimum demand for 120 receptacles in a bank building?
- [ ] 10.8 kva
- [ ] 21.6 kva
- [ ] 15.8 kva
- [ ] 9 kva
6. The branch-circuit load for one 6 kw oven would be kw.
- [ ] 6
- [ ] 5
- [ ] 4.2
- [ ] 4.8
7. The branch circuit conductor supplying a 10 hp 3ˆ½ 230v motor shall have an ampacity of at least amps.
- [ ] 38.5
- [ ] 35
- [ ] 40.25
- [ ] 17.5
8. A junction box has a 60 cubic inch capacity. The maximum number of #14 conductors permitted to be enclosed within the box is .
- [ ] 12
- [ ] 27
- [ ] 30
- [ ] 32
9. Two #10 THW and three #8 THHN conductors require a minimum size of for Liquidtight flexible metal conduit.
- [ ] 1 1/4"
- [ ] 1/2"
- [ ] 3/4"
- [ ] 1"
10. What is the va to a fully-loaded 5 hp 208v three phase motor?
- [ ] 5000-6000
- [ ] 4000-5000
- [ ] 3000-4000
- [ ] 6000-7000
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