Exam (elaborations)
Year 2 IEC Mid-Term Questions and Answers
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Exam of 14 pages for the course IEC at IEC (Year 2 IEC Mid-Term)
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Year 2 IEC Mid-TermWhich of the following installations are NOT covered by the NEC?
-Bolivar ferry boats
-Sprint towers used for cell phone signal transmission
-Southwest Airlines Jets such as 737's
-Reliant/HLand P power lines and equipment located in property easements along
streets - answer None of the above
A continuous load is any load that operates for _______. - answer3 hours or more
The water pump motor for a coin-operated car wash would be considered to be a _____
load. - answer noncontinuous
Improper electrical terminations lead to increased _____.
-A. Circuit resistance
-B. voltage dropped across the terminations
-C. Circuit current - answer a and b only
When setting the range on a DMM for a voltage measurement, if the expected voltage
to be measured is 480 volts DC, the range setting should be set on_____. -
answer600v---
A DMM is set for a voltage measurement and the range is set to 200v. If the voltage to
be measured is 277 volts, the LCD will display_____. - answerOL
Safety toe footwear for employees shall meet the requirements and the specifications of
_____. - answerANSI
The maximum permissible noise exposure level, at 97 db, is _____ hours. - answer3
Employees whose vision requires use of corrective lenses in spectacles shall be
provided with eye protection in the form of _____.
-A. optically corrected spectacles.
-B. over-spectacle-type goggles
- C. goggles with corrective lenses - answerany of these
There are ____ chapters in the 2004 edition of the NFPA 70E. - answer4
When working on live or energized equipment, conductive _____ is permitted to be
worn.
- A. jewelry
, -B. clothing - answerneither a or b
Employees shall maintain any saftey data sheets (SDS) for hazardous _____. -
answerchemicals
The chemical distributor, manufacturer, or importer shall ensure that each container of
hazardous chemical leaving the workplace has the identity of the hazardous chemical
_______.
-A. labeled
-.B tagged
-C. marked - answerany of these
Employers shall provide employees with _____ information and training on hazardous
chemicals in the work area at the time of their initial assignment. - answereffective
Where one or more complete paragraphs from the previous edition of the NRC have
been deleted in the current edition, the deletion is identified by ____ between the
remaining paragraphs. - answera bullet
Where used in the NEC, the term shall not indicate that an actions is _____, An
example of this usage appears below.
210.9 Circuits Derived from autotransformers. Branch circuits shall not be derived from
auto transformers unless the circuit supplied has a grounded conductor that is
electrically connected to a grounded conductor of the system supplying the auto
transformer.
-A.mandatory
-B. permitted
-C. allowed but not required - answermandatory
Annex H in the NEC _____.
-A. is to be used for information only unless specifically adopted by the local AHJ
-B. contains requirments to be applied to all articles. - answerA
______ equipment is constructed so that water ( in the form of moisture) will not enter it.
- answerWatertight
The ampacity of an insulated conductor is ____. - answerthe maximum amount of
current it can carry continuously without damage to the insulation.
-Equipment 1- Operates for 3 hours, 20 minutes each time it is started.
-Equipment 2- Operates for 1 hour, 15 minutes each time it is started.
-Equipment 3- Operates for 45 seconds each time it is started.
Equipment 2, shown above , is a continuous load. T/F - answerFalse
A motor and the disconnecting means (safety switch) are located on opposite sides of a
wall. Because the 8" concrete block wall separates two rooms, the two equipments are
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