NCCER ELECTRICAL TEST Exam
Questions and Correct Solutions
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
ANSWER-232
What is the name of the connecting device shown in the diagram? - CORRECT
ANSWER-Split-bolt
The volt amperes in an AC circuit is the same as - CORRECT ANSWER-Apparent
power
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 ANSWER-10.5
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 ANSWER-48 amps
What should be done to change rotation of a 3 phase motor? - CORRECT ANSWER-
Swap any 2 T leads
What instrument is used to measure current? - CORRECT ANSWER-Ammeter
Which plan indicates the location of structures and equipment on a property? -
CORRECT ANSWER-Site
Generally , the most ideal conductor is made of: - CORRECT ANSWER-Copper
What is the standard size system used in the united states? - CORRECT ANSWER-
AWG
What is insulating tape? - CORRECT ANSWER-Non-Conductive adhesive tape
Which of these is used as a guide to assist cables entering a conduit? - CORRECT
ANSWER-Piston
Which of the following is not a reason why electrical systems must be grounded? -
CORRECT ANSWER-Limit the potential between ungrounded conductors
What type of conduit body is characterized by a threaded straight hub on each end? -
CORRECT ANSWER-C
, A megger will be used to check an in-service cable. The Electrician MUST be sure that
the circuit is: - CORRECT ANSWER-De-energized and locked tagged out, and tested
Rubber gloves MUST be electrically tested at MAXIMUM intervals of: - CORRECT
ANSWER-6 months
A dangerously high voltage is produced when someone opens the secondary circuit of
a: - CORRECT ANSWER-Current transformer
Which choice best describes the two types of pushbutton operators typically used in
motor controls - CORRECT ANSWER-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 ANSWER-Authorized supervisor
A drawing showing a point A to point B hookup of conductors is called a: - CORRECT
ANSWER-Wiring diagram
A NEMA type___ enclosure is both watertight and corrosion- resistant. - CORRECT
ANSWER-4X
What's the MAIN characteristic of a confined space? - CORRECT ANSWER-Limited
access and egress
Which of the following BEST describes where the type and size of overcurrent
protection is found? - CORRECT ANSWER-Panelboard schedule
A Type "X" conduit body has how many conduit entries - CORRECT ANSWER-4
What test equipment can be used to test the condition of insulation in electrical
apparatus? - CORRECT ANSWER-Megohmmeter
The opposing force to a flow of alternating current is called: - CORRECT ANSWER-
Reactance
That is a trapeze type support - CORRECT ANSWER-Two threaded rods supporting a
channel or strut
The opposition to current flow referred to as: - CORRECT ANSWER-Resistance
The type of mounting used for lighting fixtures is indicated in the: - CORRECT
ANSWER-Electrical drawings
Verifying the presence or absence of voltage should be performed only by: - CORRECT
ANSWER-Qualified individuals
Questions and Correct Solutions
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
ANSWER-232
What is the name of the connecting device shown in the diagram? - CORRECT
ANSWER-Split-bolt
The volt amperes in an AC circuit is the same as - CORRECT ANSWER-Apparent
power
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 ANSWER-10.5
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 ANSWER-48 amps
What should be done to change rotation of a 3 phase motor? - CORRECT ANSWER-
Swap any 2 T leads
What instrument is used to measure current? - CORRECT ANSWER-Ammeter
Which plan indicates the location of structures and equipment on a property? -
CORRECT ANSWER-Site
Generally , the most ideal conductor is made of: - CORRECT ANSWER-Copper
What is the standard size system used in the united states? - CORRECT ANSWER-
AWG
What is insulating tape? - CORRECT ANSWER-Non-Conductive adhesive tape
Which of these is used as a guide to assist cables entering a conduit? - CORRECT
ANSWER-Piston
Which of the following is not a reason why electrical systems must be grounded? -
CORRECT ANSWER-Limit the potential between ungrounded conductors
What type of conduit body is characterized by a threaded straight hub on each end? -
CORRECT ANSWER-C
, A megger will be used to check an in-service cable. The Electrician MUST be sure that
the circuit is: - CORRECT ANSWER-De-energized and locked tagged out, and tested
Rubber gloves MUST be electrically tested at MAXIMUM intervals of: - CORRECT
ANSWER-6 months
A dangerously high voltage is produced when someone opens the secondary circuit of
a: - CORRECT ANSWER-Current transformer
Which choice best describes the two types of pushbutton operators typically used in
motor controls - CORRECT ANSWER-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 ANSWER-Authorized supervisor
A drawing showing a point A to point B hookup of conductors is called a: - CORRECT
ANSWER-Wiring diagram
A NEMA type___ enclosure is both watertight and corrosion- resistant. - CORRECT
ANSWER-4X
What's the MAIN characteristic of a confined space? - CORRECT ANSWER-Limited
access and egress
Which of the following BEST describes where the type and size of overcurrent
protection is found? - CORRECT ANSWER-Panelboard schedule
A Type "X" conduit body has how many conduit entries - CORRECT ANSWER-4
What test equipment can be used to test the condition of insulation in electrical
apparatus? - CORRECT ANSWER-Megohmmeter
The opposing force to a flow of alternating current is called: - CORRECT ANSWER-
Reactance
That is a trapeze type support - CORRECT ANSWER-Two threaded rods supporting a
channel or strut
The opposition to current flow referred to as: - CORRECT ANSWER-Resistance
The type of mounting used for lighting fixtures is indicated in the: - CORRECT
ANSWER-Electrical drawings
Verifying the presence or absence of voltage should be performed only by: - CORRECT
ANSWER-Qualified individuals
