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IEC Year 3 Real Exam Questions And Answers 2025 latest update.
Typology: Exams
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Which of the following is an example of a load?
I. Relay Coil
II. Solenoid
III. Pilot Light
Select one:
a. I, II & III
b. I only
c. III only
d. I & II only
e. II only
a. I, II & III
A qualified person must be trained in the skills and techniques to determine nominal voltage.
Select one:
a.True
b.False
a. true
A(n) ___ uses voltages in the range of 50 to 5000 volts to test for insulation damage to conductors or windings.
Select one:
a.megohmmeter
b.ammeter
c.oscilloscope
d.none of these
a. megohmmeter
The training section of an electrical safety program identifies all training required for contractors and vendors.
Select one:
a.True
b.False
a. true
A(n) ___ is a noncontact temperature probe that senses the infrared energy emitted by a material.
An analog meter is ___ than a digital meter.
Select one:
a.less susceptible to electrical noise
b.less accurate
c.both a and b
d.neither a nor b
c. both a and b
Ghost voltages appear on meter displays when the meter is within the electromagnetic field of nearby current-carrying conductors, fluorescent lighting, or operating electrical equipment. This ghost voltage appears when the meter ___ connected to an energized circuit.
Select one:
a.is
b.is not
b. is not
A ___ can be utilized to indicate that a GFCI device has been tripped.
Select one:
a.voltage tester
b.plug-in GFCI receptacle tester
c.either a or b
d.neither a nor b
c. either a or b
A(n) ___ is used to ensure that a motor rotates in the correct direction when connected to a circuit.
Select one:
a.oscilloscope
b.megohmmeter
c.phase sequence indicator
d.digital logic probe
e.ammeter
c. phase sequence indicator
___ is indicated on a clamp-on ammeter when placed within the magnetic field produced around a single conductor.
Select one:
a.Voltage
b.Resistance
c.Current
d.any of these
c. current
When using a meter to test voltage on an energized circuit, no part of your body should touch ___.
Select one:
a.exposed conductors
b.metal tips of test leads
c.both a and b
d.neither a nor b
c. both a and b
OSHA standards require that electrical equipment be ___ before it is serviced or repaired.I. de-energized II. locked III. tagged
Select one:
a.II & III only
b.I & II only
c.I & III only
d.I, II & III
d. I, II & III
One of the most important goals of the Multi-Employer Worksite Policy from OSHA is to ensure that ___.
Select one:
a.Good communication occurs between the contractors working on the site
b.Every contractor on the worksite receives a citation
c.Only the contractor responsible receives a citation
d.The General Contractor will enforce safety on the worksite
a. Good communication occurs between the contractors working on the site
An electrical safety program should include a section on ___.
Select one:
a.Responsibility
b.Procedures
c.Principles
d.All of the above
d. all of the above
A written, documented electrical safety program is ___ than a verbal one.
Select one:
a.More effective
b.Less effective
c.Just as effective
a. more effective
a.True
b.False
b. false
Which of the following devices is not recommended for performing absence of voltage tests?
Select one:
a.Noncontact voltage tester
b.Solenoid voltage tester
c.Digital multimeter
d.High input impedance contact voltage tester
a. noncontact voltage tester
An arc flash hazard analysis is used to determine ___.
Select one:
a.Potential electrical arc flash hazards
b.The Arc Flash Boundary
c.The required PPE
d.All of the above
d. all of the above
The ___ is the distance from exposed energized conductors or circuit parts where bare skin would receive the equivalent of 1.2 cal/cm2.
Select one:
a.Arc Flash Boundary
b.Limited Approach Boundary
c.Prohibited Approach Boundary
d.Restricted Approach Boundary
a. arc flash boundary
The Approach boundaries are viewed as a barrier extending ___ degrees around an exposed energized conductor or circuit part.
Select one:
a.
b.
c.
d.
d. 360
OSHA standards state that electrical equipment must be ___ before preventative maintenance or service is to be performed.
I. locked out II. tagged out
Select one:
e. 50
When performing certain operations on or near energized equipment or circuits, approved ___ clothing must be worn for protection from electrical arcs.
Select one:
a.arc-rated
b.flame-proof
c.both a and b
d.neither a nor b
An arc flash is an ___.
Select one:
a.explosion that occurs when the air surrounding electrical equipment becomes ionized and conductive
b.extremely high temperature discharge produced by an electrical fault in the air
b. extremely high temperature discharge produced by an electrical fault in the air
The entire surface of rubber insulating gloves must be field tested before each use. This testing involves a ___.
Select one:
a.visual inspection
b.manual air test
c.both a and b
d.neither a nor b
c. both a and b
The limited approach boundary (distance from energized parts) ___ vary depending on the voltage.
Select one:
a.does
b.does not
a. does
NFPA 70E states that only qualified persons should test or troubleshoot circuits over ___ volts.
Select one:
a.
b.
c.
d.
d. 50
___ may be damaged or destroyed by electrostatic discharge.
c.III only
d.II & III only
e.I, II & III
a. I & II only
When a short circuit occurs in a circuit where the conduit couplings and connectors are loose, the opening time of an OCPD ___ affected.
Select one:
a.is
b.is not
b. is not
A GFCI enables a circuit to be opened before there is sufficient ground-fault current to cause injury to personnel.
Select one:
a.True
b.False
a. true
The conductor shown at Point C in Figure 306.52 is a(n) ___.
Select one:
a.equipment grounding conductor
b.main bonding jumper
c.grounded conductor
d.grounding electrode conductor
b. main bonding jumper
The definition of an equipment grounding conductor in the NEC® generally covers many different concepts and parts of a grounding system.
Select one:
a.True
b.False
a. true
A circuit is installed in EMT and compression fittings are used. A separate EGC is NOT installed in the conduit. If a ground fault occurs and one or more couplings were never tightened properly, compared to normal operation, the fault current will be ___ and the OCPD will take ___ time to open.
Select one:
a.lower the same
b.higher more
c.higher less
d.lower more
e.lower less
Select one:
a.I & II only
b.II & III only
c.II only
d.I, II & III
e.I only
a. I & II only
A ___ is used to connect the grounding electrode to the equipment or to the grounded conductor at the service equipment.
Select one:
a.grounded conductor
b.grounding electrode conductor
c.main bonding jumper
d.main breaker
b. grounding electrode conductor
The ___ is the connection between the grounded circuit conductor and the equipment grounding conductor at the service.
Select one:
a.grounding electrode conductor
b.main bonding jumper
c.grounded service conductor
d.grounding electrode
b. main bonding jumper
A(n) ___ conductor carries circuit current in normal operation.
Select one:
a.equipment grounding
b.grounding electrode
c.neutral
d.none of these
c. neutral
Which of the following is not an example of a solidly grounded system?
Select one:
a.120/208-volt, three-phase, four-wire
b.120/240-volt, three-phase, four-wire
c.120/240-volt, single-phase, three-wire
d.480-volt, three-phase, three-wire
d. 480-volt, three phase, three wire
