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THE ELECTRICAL NCCER TEST
QUESTIONS WITH CORRE CT
ANSWERS
Question :Which of the following is a 90 degree,
explosion proof fitting?
Correct answer:GUAL
Question :What is a dropout plate?
Correct answer:Metal plate with a curved surface for
cable to follow as it passes from the tray
Question :All of the following are common service
voltages in the United States EXCEPT:
Correct answer:372/575 3-PHASE, 4-WIRE
Question :What does a GFCI breaker do?
Correct answer:Opens a circuit to prevent operation of an
electrical device
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Question :What will happen when one or more coils in a
winding are grounded?
Correct answer:The motor will automatically blow fuses
Question :Eight incandescent lighting fixtures are to be
installed. Each fixture is 120- volts, with a 200-watt lamp.What is the total connected load?
Correct answer:13.3 amps
Question :The must be grounded in a bussed gutter if used
as the main service equipment.
Correct answer:Neutral busbar
Question :When wall mounting cable tray, ensure that
Correct answer:The building structure is strong enough to
support the tray system
Question :The purpose of sealing cable ends when reels of
cable are in storage is
Correct answer:To keep moisture from creeping in
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Question :The outer covering on liguid-tight flexible
metal conduit is used for
Correct answer:A moisture seal
Question :A good electrical connection should
Correct answer:Be mechanically and electrically secure
Question :The symbol normally used for duplex
Correct answer:Circle with two parallel lines drawb
through it
Question :Disconnecting means are covered in
Correct answer:NEC Section 110-22
Question :In relation to switches, the term throw refers to
the
Correct answer:Number of internal operations that a
switch can perform
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Question :A 3-phase, 4-wire, 480v service requires
______ current transformer(s)
Correct answer:3
Question :Services conductors and equipment are covered
in
Correct answer:NEC Article 230
Question :The NEC required that all receptacles installed
on 25 amp and 20 amp branch circuits be ______ receptacles
Correct answer:Grounding
Question :A transformer with the primary of 400 turns
and a secondary of 300 turns has a _____ Correct answer:Step-down turns ratio of 4:3