Electrical apprenticeship year 1- exam 2 prep Questions with Detailed Verified Answers

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Electrical apprenticeship year 1- exam 2
prep Questions with Detailed Verified
Answers

Question:Of the three basic classifications of magnetic materials,
_______________ materials are either metal or nonmetal materials that
cannot be magnetized.


Ans: Diamagnetic


Question: What device is designed to open and disconnect a circuit in the
event of excessive current?


Ans: Fuse


Question: In the English system, the total force producing a magnetic field is
the _____.


Ans: Magnetomotive force


Question: A conductor is made from a material that contains between _____
valence electrons.


Ans: One and three

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Question: The regions formed in the molecular structure of magnetic metals
are sometimes called magnetic _____.


Ans: domains


Question: A series circuit has a total resistance of 180 Ω and an applied
voltage of 120 V. What is the current flow?


Ans: 0.667 A


Question: Of the three basic classifications of magnetic materials,
_______________ materials are metals that are most easily magnetized.


Ans: Ferromagnetic


Question: True or false: The grounding prong of a plug should never be cut off
or bypassed.


Ans: True


Question: In a series circuit, the sum of the voltage drops is _____ the applied
voltage.


Ans: Equal to


Question: A basic law of magnetism states that unlike poles _____ and like
poles _____.