Journeyman Electrician Practice Test-25
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Question 1 of 10
1. Question
1 pointsThe EMT conduit run in between two terminal points shall be securely fastened within …………. of a outlet box.
Correct
Incorrect
Refer: NEC 358.30 (A)
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Question 2 of 10
2. Question
1 pointsThe calculated demand load of 120/240 dwelling unit is 250 ampere, which of the following minimum size of THW copper cane be used as service conductor?
Correct
Incorrect
Refer : NEC Table 310.15(B)
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Question 3 of 10
3. Question
1 pointsIf the flexible metal conduit is used for tap connections to luminaries , what the minimum size that shall be used?
Correct
Incorrect
Refer : NEC 348.20
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Question 4 of 10
4. Question
1 pointsAs per NEC , The purpose of Electrical device is which of the following?
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Incorrect
Refer NEC 100
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Question 5 of 10
5. Question
1 pointsThe secondary voltage of a transformer connected to the impedance heating elements shall not be over ……………… volts if it is not protected by GFCI.
Correct
Incorrect
Refer NEC 424.32
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Question 6 of 10
6. Question
1 pointsA single phase 5ph , 230 volts motor has name plate full load rating of 40 amp. What is its overload protection device rating in amperes?
Correct
Incorrect
Refer NEC 430.32 [A]
40 * 1.15 = 46 amperes -
Question 7 of 10
7. Question
1 pointsWhich of the following is a over current protection rating of a 30 amperes snap switch equipped on panel board?
Correct
Incorrect
Refer : NEC 408.36 A
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Question 8 of 10
8. Question
1 pointsA 120 volts branch circuit supplies only cord and plug type window conditioner has an ampere rating of 20 amperes. What is the maximum full load current rating of an air conditioner?
Correct
Incorrect
Refer : NEC 440.62 B
80% * 20 = 16 AMPERES -
Question 9 of 10
9. Question
1 pointsIn an electric induction motor, the developed torque is proportional to: …
Correct
Incorrect
Basic Electric Theory:
Torque = (Supply Voltage ) 2 -
Question 10 of 10
10. Question
1 pointsIn an Electric circuit the power factor is the ratio of apparent power to effective power(real power).
Correct
Incorrect
Power Factor : Real Power / Apparent Power