Journeyman Electrician Practice Test -20
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Free online Journeyman electrician Exam Practice Test – 20
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Question 1 of 10
1. Question
1 pointsIf the distance between pole and building is less than 40 ft, which of the following wire that can be used as overhead span?
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Question 2 of 10
2. Question
1 pointsThe standby power plants should have the fuel supply to supply the full load of at lest …………………. hours.
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Question 3 of 10
3. Question
1 pointsConvert the temperature of 45 0 C in to temperature in degree F? ………………….
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Sol : First multiply 45 with 9/5 = 45 * 9/5 = 81
Add 32 to the answer = 81 + 32 = 114 0 F -
Question 4 of 10
4. Question
1 pointstwo mobile homes with assumed capacity of 1000 watts at 115/230 volts are connected on one feeder, what is the minimum watt per mobile home site?
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Refer : NEC Table 550.31
The demand factor for two mobile homes connected on one feeder is 55%.
= 1000 * 0.55 = 550 wats -
Question 5 of 10
5. Question
1 pointsA 800 ft apartment consists of three appliances. calculate the total net computed power in the apartment?
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Lighting Load = 800 * 3 = 2400 wats
3 appliances = 3 * 3000 = 9000 atts
total gross load = 11400
First 3000 wt = 100% * 3000 = 3000 +
remaining 8400 = 35% * 8400 = 2940
= 5940 watts -
Question 6 of 10
6. Question
1 pointsWhen the temperature on the branch circuit conductor increases it leaks more current.
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When the temperature increases the insulation of the wire will deteriorate.
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Question 7 of 10
7. Question
1 pointsThe maximum ampacity of No 12 size wire is ……………………….
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Question 8 of 10
8. Question
1 pointsThe resistance of the large wire higher when used in an ac circuit than when in a dc circuit.
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Question 9 of 10
9. Question
1 pointsType T wire can only be used in wet location where the temperature of the will not exceed 600 C at its full loaded condition.
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Note : Type T wire can only used in dry location.
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Question 10 of 10
10. Question
1 pointsAs per NEC 100 ,the continuous load defines, the load on a feeder or branch circuit likely to continue …………… hours or longer.
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