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Electric Motor Controls Study Guide Review Test.
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Electric Motor Controls Study Guide Review Test. equipment grounding involves connecting all metal parts that do not carry current under normal conditions to ___________ - CORRECT ANSWER Earth ground The most dangerous path for electric current to the human body is _________ - CORRECT ANSWER...

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  • December 12, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • saca
  • electric motor controls study guide review test

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  • SACA
  • SACA

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Electric Motor Controls Study Guide
Review Test.
equipment grounding involves connecting all metal parts that do not carry current under normal
conditions to ___________ - CORRECT ANSWER Earth ground



The most dangerous path for electric current to the human body is _________ - CORRECT ANSWER
through the chest



the best way to avoid electrical shock is work in equipment ______ - CORRECT ANSWER de-energized



when performing service or maintenance on equipment all power sources (electrical, mechanical,
pneumatic,...) must be _______________ - CORRECT ANSWER Locked out & tagged out



the only person that can remove a lock out/ tag out is the person that _______ - CORRECT ANSWER
installed it



3 phase power is transmitted with each phase _____________ degrees apart - CORRECT ANSWER 120



name the two basic three phase systems for power distribution - CORRECT ANSWER delta & wye



if a three phase wye is 208V phase to phase, any phase to neutral equals __________ - CORRECT
ANSWER 120 V



the voltage reading across a disconnect fuse is 208V indicates _______ - CORRECT ANSWER blown fuse



a dual element fuse is used when dealing with _______ current - CORRECT ANSWER High inrush



a motors locked rotor current is typically ____ times greater than its operating current - CORRECT
ANSWER 6

, current that is drawn when a motor is first started up is known as in-rush or _______ - CORRECT
ANSWER Locked rotor



the current drawn by a motor when operating at its rated full load speed is called __________ -
CORRECT ANSWER full load current (FLA)



name the two main parts of an AC electric motor - CORRECT ANSWER stator & rotor



the speed listening on an AC motor indicates the speed a motor runs at when delivering its rated
_______ - CORRECT ANSWER horse power



a dual voltage motor that is run on the higher voltage will draw _____ current - CORRECT ANSWER Less



does a motor controller include overload protection for a motor? - CORRECT ANSWER no



A motor starter is a motor controller with _________ - CORRECT ANSWER overload protection



name the three most common types of overloads - CORRECT ANSWER thermal breakers, magnetic
breakers, solid state



a transformer is an ______ device that converts AC power from one voltage level to another - CORRECT
ANSWER Inductive



the secondary voltage of a transformer is determined by the input voltage and the ______ - CORRECT
ANSWER turns ratio



the power relationship of a transformer is power in is approximately equal to __________ - CORRECT
ANSWER Power out



if a transformers output voltage is lower than the input voltage, the input current will be ________ than
the output current - CORRECT ANSWER Less

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