Journeyman Electrician Practice Test-30
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Question 1 of 10
1. Question
1 pointsThe computed load of an utilization equipment is 600 VA supplied by 600 volts branch circuit, which of the following is the minimum branch circuit ampere rating?
Correct
Incorrect
Refer : NEC 210.19 (B) (1)
Utilization equipment ampere rating = 600 VA / 600 V = 1 amp
Branch circuit rating = 125 % of 1 = 1.25 ampere -
Question 2 of 10
2. Question
1 pointsThe Rod and pipe electrodes must installed in such a way that at lest ……………. length is in contact with earth soil.
Correct
Refer : NEC 250.53 (G)
Incorrect
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Question 3 of 10
3. Question
1 pointsThe Type AC cables shall be permitted to be installed in the following locations?
Correct
Incorrect
Refer : NEC 320.10
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Question 4 of 10
4. Question
1 pointsIf 6 number shore power receptacles are supplied by one feeder service at marina, which of the following demand factor can be used for calculating total load?
Correct
Incorrect
Refer : NEC Table 550.12
6 shore power receptacles = demand factor is 90% -
Question 5 of 10
5. Question
1 pointsThe carried continuously in chipper bars in sheet metal auxiliary gutters shall not exceed …………… of cross section of the conductor.
Correct
Incorrect
Refer : NEC 366.23 A
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Question 6 of 10
6. Question
1 pointsThe heat loss in a 2 ohm conductor is 800 watts, what is the ampere current flows in the conductor?
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Incorrect
Heat loss = I2 R = 800
I2 * 2 = 800
I = sqrt (400)I = 20 amperes
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Question 7 of 10
7. Question
1 pointswhich of the following conditions or places the Surface metal raceways shall not be permitted to use?
Correct
Incorrect
Refer : NEC 386.12
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Question 8 of 10
8. Question
1 pointsIn a series electrical circuit the current flowing in the circuit elements is same.
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Question 9 of 10
9. Question
1 pointsWhich of the following will be varied to vary the speed of the DC Motor?
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Question 10 of 10
10. Question
1 pointsAs per ohms law the current flowing in the circuit is proportional to ………………..
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