NCCER Electrical 2024 Exam Test
Questions And Verified Correct Answers
What is shown on a sectional drawing? - CORRECT ANSWERS-cutaway view of a
building
The NEC recommends maintaining voltage within a 3% drop. If a branch circuit
operates at 240 volts AC. What is the minimum circuit operating volt? - CORRECT
ANSWERS-232
What is the name of the connecting device shown in the diagram? - CORRECT
ANSWERS-split - bolt
The volt amperes in an AC circuit is the same as - CORRECT ANSWERS-apparent
power
What should be done to change rotation of a 3 phase motor? - CORRECT ANSWERS-
Swap any two T leads
5. If a voltage source of a circuit provides 240 volts and there are 5 ohms of resistance,
how much current is in the circuit? - CORRECT ANSWERS-48amps
4.What is the voltage drop for a #8 (16.510 cmil) copper wire at 120v. 215 feet one way
and a load of 39amps? - CORRECT ANSWERS-10.5
What instrument is used to measure current - CORRECT ANSWERS-Ammeter
Which plan indicates the location of structures and equipment on a property -
CORRECT ANSWERS-site
Generally , the most ideal conductor is made of: - CORRECT ANSWERS-copper
What is the standard size system used in the united states - CORRECT ANSWERS-
AWG
What is insulating tape? - CORRECT ANSWERS-Non-Conductive adhesive tape
Which of these is used as a guide to assist cables entering a conduit? - CORRECT
ANSWERS-Piston
, What type of conduit body is characterized by a threaded straight hub on each end? -
CORRECT ANSWERS-C
Which of the following is not a reason why electrical systems must be grounded? -
CORRECT ANSWERS-Limit the potential between ungrounded conductors
A megger will be used to check an in-service cable. The Electrician MUST be sure that
the circuit is: - CORRECT ANSWERS-De-energized and locked tagged out, and tested
Rubber gloves MUST be electrically tested at MAXIMUM intervals of: - CORRECT
ANSWERS-6 months
A dangerously high voltage is produced when someone opens the secondary circuit of
a: - CORRECT ANSWERS-Current transformer
Which choice best describes the two types of pushbutton operators typically used in
motor controls - CORRECT ANSWERS-Open and Closed
In the event of an emergency where the lockout/ tagout device is left secured, who can
remove the lockout/tagout device? - CORRECT ANSWERS-Authorize supervisor
A drawing showing a point A to point B hookup of conductors is called a: - CORRECT
ANSWERS-Wiring diagram
A NEMA type___ enclosure is both watertight and corrosion- resistant. - CORRECT
ANSWERS-4X
What's the MAIN characteristic of a confined space? - CORRECT ANSWERS-Limited
access and egress
Which of the following BEST describes where the type and size of overcurrent
protection is found? - CORRECT ANSWERS-Panelboard schedule
A Type "X" conduit body has how many conduit entries - CORRECT ANSWERS-4
What test equipment can be used to test the condition of insulation in electrical
apparatus? - CORRECT ANSWERS-Megohmmeter
The opposing force to a flow of alternating current is called: - CORRECT ANSWERS-
Reactance
That is a trapeze type support - CORRECT ANSWERS-Two threaded rods supporting a
channel or strut
The opposition to current flow referred to as: - CORRECT ANSWERS-resistance
Questions And Verified Correct Answers
What is shown on a sectional drawing? - CORRECT ANSWERS-cutaway view of a
building
The NEC recommends maintaining voltage within a 3% drop. If a branch circuit
operates at 240 volts AC. What is the minimum circuit operating volt? - CORRECT
ANSWERS-232
What is the name of the connecting device shown in the diagram? - CORRECT
ANSWERS-split - bolt
The volt amperes in an AC circuit is the same as - CORRECT ANSWERS-apparent
power
What should be done to change rotation of a 3 phase motor? - CORRECT ANSWERS-
Swap any two T leads
5. If a voltage source of a circuit provides 240 volts and there are 5 ohms of resistance,
how much current is in the circuit? - CORRECT ANSWERS-48amps
4.What is the voltage drop for a #8 (16.510 cmil) copper wire at 120v. 215 feet one way
and a load of 39amps? - CORRECT ANSWERS-10.5
What instrument is used to measure current - CORRECT ANSWERS-Ammeter
Which plan indicates the location of structures and equipment on a property -
CORRECT ANSWERS-site
Generally , the most ideal conductor is made of: - CORRECT ANSWERS-copper
What is the standard size system used in the united states - CORRECT ANSWERS-
AWG
What is insulating tape? - CORRECT ANSWERS-Non-Conductive adhesive tape
Which of these is used as a guide to assist cables entering a conduit? - CORRECT
ANSWERS-Piston
, What type of conduit body is characterized by a threaded straight hub on each end? -
CORRECT ANSWERS-C
Which of the following is not a reason why electrical systems must be grounded? -
CORRECT ANSWERS-Limit the potential between ungrounded conductors
A megger will be used to check an in-service cable. The Electrician MUST be sure that
the circuit is: - CORRECT ANSWERS-De-energized and locked tagged out, and tested
Rubber gloves MUST be electrically tested at MAXIMUM intervals of: - CORRECT
ANSWERS-6 months
A dangerously high voltage is produced when someone opens the secondary circuit of
a: - CORRECT ANSWERS-Current transformer
Which choice best describes the two types of pushbutton operators typically used in
motor controls - CORRECT ANSWERS-Open and Closed
In the event of an emergency where the lockout/ tagout device is left secured, who can
remove the lockout/tagout device? - CORRECT ANSWERS-Authorize supervisor
A drawing showing a point A to point B hookup of conductors is called a: - CORRECT
ANSWERS-Wiring diagram
A NEMA type___ enclosure is both watertight and corrosion- resistant. - CORRECT
ANSWERS-4X
What's the MAIN characteristic of a confined space? - CORRECT ANSWERS-Limited
access and egress
Which of the following BEST describes where the type and size of overcurrent
protection is found? - CORRECT ANSWERS-Panelboard schedule
A Type "X" conduit body has how many conduit entries - CORRECT ANSWERS-4
What test equipment can be used to test the condition of insulation in electrical
apparatus? - CORRECT ANSWERS-Megohmmeter
The opposing force to a flow of alternating current is called: - CORRECT ANSWERS-
Reactance
That is a trapeze type support - CORRECT ANSWERS-Two threaded rods supporting a
channel or strut
The opposition to current flow referred to as: - CORRECT ANSWERS-resistance
