Journeyman Electrician Practice Test 12

Question 1: In an electric circuit, the drop in the feeders should not exceed ..............

• 2 %
• 3 %
• 5 %

Question 2: An electric circuit draws 200 VA of apparent power and 120 Watts, how much reactive power in VAR does the electric circuit draws.

• 160 VAR
• 180 VAR
• 150 VAR
• 140 VAR

Question 3: What is the minimum watts required per sq ft of floor area to determine the minimum number of lighting branch circuits

• 2 watts
• 3 watts
• 1 watts
• 4 watts

NEC Reference: NEC 202.2

Question 4: which of the following motor should never be used on a machine that is hard to start?

• DC Motor
• Capacitor Motor
• Split-Phase Motor

Question 5: If a motor is connected on 120 Volts electrical circuit, which of the following disconnecting switch is used?

• Single pole witch
• 2 -pole swithc

Question 6: If the motor is larger than 2HP. the disconnecting switch must be rated in horsepower not less than the horse power rating of the motor.

• True
• False

Question 7: If time delay fuses are used as short circuit protection for motors, the protection rating of fuse can be ................ percentage of rated current of power.

• 125
• 150
• 175
• 200

Question 8: How many 10 THHN conductors can be installed in trade size 1 EMT?

• 10 conductors
• 16 conductors
• 22 conductors
• 8 conductors

Question 9: What size service conductors are required for a dwelling load with a calculated load is 190 A. The service disconnect breaker is rated at 200 A?

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

NEC Reference: NEC 310.15(B)(16)

Question 10: Which is the minimum size copper conductor is required for the grounding electrode conductor (GEC) connected to a ground rod

• 6 AWG
• 8 AWG
• 10 AWG
• 12 AWG

NEC Reference: NEC 250.166(A)

Question 11: Which of the following device is required to detect and protect against arcing in 15- and 20-amp branch circuits supplying outlets installed in dwelling units?

• AFCI
• GFCI
• AFI
• GFFC

NEC Reference: NEC 210.12(A)

Question 12: The voltage shall not be greater than ………….. to supply listed electrical discharge lightening in dwelling units, hotels and motels?

• 120 volts
• 240 volts
• 480 volts
• 277 volts

NEC Reference: NEC 210.6(A)

Question 13: What is the maximum rating of overcurrent devices protecting panelboard supplying potential transformers?

• 15 amperes
• 25 amperes
• 30 amperes
• 20 amperes

NEC Reference: NEC 408.52

Question 14: The overhead service conductors where the voltage does not exceed 300 volts passes over a residential property, drive-ways not to subject to truck traffic must have a minimum clearance of ……………

• 18 feet
• 12 feet
• 8 feet
• 10 feet

NEC Reference: NEC 230.24(B)(2)

Question 15: The live parts of the motor operating at 120 volts must be guarded.

• True
• False

NEC Reference: NEC 430.232