Journeyman Electrician Practice Test 14

Question 1: For a small form building consisting of 2 wire branch circuits, What is the minimum ampacity capacity of service equipment is required?

• A 30-amp Service Equipment supplied by two No.8 Copper wires
• A 30-amp Service Equipment supplied by two No.8 aluminum wires
• A 15-amp Service Equipment supplied by two No.8 Copper wires
• A 15-amp Service Equipment supplied by two No.8 aluminum wires

Question 2: One pole circuit breaker protects one 120 volt branch circuit.

• True
• False

Question 3: If the motor overload is increased to much, the motor will ....................

• stall and burnout
• draw more current
• be reduced to half the speed

Question 4: Proximity effect is due to the current flowing in the ..............

• earth
• sheath
• neighboring conductor

Question 5: In a Transmission system the reactive power can be injected by using ..........................

• shunt capacitors and reactors
• synchronous capacitors
• series capacitors

Question 6: Regulating transformers are used in power system to control:

• power factor
• load flow
• voltage

Question 7: The speed of the ordinary AC Motor can be controlled by rheostats.

• True
• False

Question 8: A 3 HP motor operating at 104 F has a service factor of 1.2. What is the maximum power that it can continuously without any damage?

• 3.6 HP
• 3.2 HP
• 2.4 HP
• 3 HP

Question 9: Which of the following motors has lowest starting current?

• split phase motors
• RI Motors
• Capacitor Motors

Question 10: Repulsion-Start Induction Run Motors can run on only single phase alternating current.

• True
• False

Question 11: Which of the following is the equation used to calculate the voltage drop in a resistor according to Kirchhoff’s voltage law?

• IR
• I/R
• R/I
• I²R

Question 12: How many number of entrances should be provided to give access from working space about electrical equipment?

• 1
• 2
• 3
• 4

NEC Reference: NEC 110.26

Question 13: The minimum size copper equipment grounding conductor for a 100 amperes circuit is …………….

• 8 AWG
• 10 AWG
• 6 AWG
• 12 AWG

NEC Reference: NEC 250.122

Question 14: The overhead conductors between last pole of power company and building structure used for electrical service are termed as …………..

• Service entrance
• Service drop
• Service head
• Service entrance conductors

Question 15: The pendant conductors longer than ……….. in length to be twisted together.

• 4 feet
• 3 feet
• 5 feet
• 2 feet

NEC Reference: NEC 410.54(C)