Journeyman Electrician Practice Test 25

Question 1: The EMT conduit run in between two terminal points shall be securely fastened within ............. of a outlet box.

• 3 ft
• 10 ft
• 8 ft
• 5 ft

NEC Reference: NEC 358.30(A)

Question 2: The 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?

• 1/0 AWG
• 2/0 AWG
• 3/0 AWG
• 4/0 AWG

NEC Reference: NEC 310.15(B)

Question 3: <span style="font-size: 14pt;">If the flexible metal conduit is used for tap connections to luminaries , what the minimum size that shall be used?</span>

• 1/2 inch
• 1 inch
• 1 1/2 inches
• 2 inches

NEC Reference: NEC 348.20

Question 4: <span style="font-size: 14pt;">As per NEC , The purpose of Electrical device is which of the following?</span>

• utilize energy
• Transfer Energy from one place to another only
• Transfer and control the energy
• Controls the energy only

Question 5: <span style="font-size: 14pt;">The secondary voltage of a transformer connected to the impedance heating elements shall not be over .................. volts if it is not protected by GFCI.</span>

• 30
• 80
• 50
• 40

NEC Reference: NEC 424.32

Question 6: <span style="font-size: 14pt;">A single phase 5ph , 230 volts motor has name plate full load rating of 40 amp. What is its overload protection device rating in amperes?</span>

• 46 amperes
• 40 amperes
• 50 amperes
• 60 amperes

NEC Reference: NEC 430.32

Question 7: <span style="font-size: 14pt;">Which of the following is a over current protection rating of a 30 amperes snap switch equipped on panel board?</span>

• 200 amperes
• 100 amperes
• 50 amperes
• 150 amperes

NEC Reference: NEC 408.36

Question 8: <span style="font-size: 14pt;">A 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?</span>

• 16 amperes
• 10 amperes
• 20 amperes
• 15 amperes

NEC Reference: NEC 440.62

Question 9: In an electric induction motor, the developed torque is proportional to: ...

• Supply Voltage ²
• 1 / Supply Voltage ²
• Supply Voltage
• 1 / Supply Voltage

Question 10: In an Electric circuit the power factor is the ratio of apparent power to effective power(real power).

• True
• False