IEC YEAR 2 FINAL EXAM NEWEST ACTUAL EXAM COMPLETE 500 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+.pdf

IEC Year 2 Semester 2 2024
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In a 60 Hertz system, the voltage will go to "0" ___ times per second? -
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nANS>D.
120


What type of magnet is used for the coil in a relay? - ANS>C.
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electromagnet


___ flow equals current flow. - ANS>C.
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Electron


______ law states "charged bodies attract or repel each other with a force
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that is directly proportional to the product of the charges and inversely pr
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oportional to the square of the distance between them." - ANS>D.
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Coulomb's


If the RMS value is 125 volts, what is the peak value? - ANS>D.
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176.75


If the RMS value is 125 volts, what is the peak value? - ANS>D.
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,176.75


Which of the symbols, shown below, is used to represent an inductor in a
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schematic circuit? - ANS>C. n n n




Electrical current is the flow of ___. - ANS>B.
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electrons


Which of the formulas, shown below, is correct to find the total of three c
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apacitors in a series circuit? - ANS>B.
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Which of the formulas, shown below, is correct to find the equivalent of t
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hree inductors in a parallel circuit? - ANS>A.
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As current flow through a conductor increases, the magnetic field strengt
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h ___. - ANS>C.
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increases


Current flow through a conductor creates a magnetic field around the con
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ductor. - ANS>B. n n




True

,A change in the magnetic field surrounding the conductor induces a volta
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ge in the conductor. This induced voltage is known as ___. - ANS>B.
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Counter EMF n




A ___ is a device that converts electrical energy into a linear force. -
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ANS>D.
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solenoid


A ___ is a device that attracts iron and steel because of the molecular alig
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nment of its material. - ANS>D.
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magnet


Nonferrous materials, such as copper, ___ attracted by the magnetic field
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around a magnet. - ANS>B. n n n n




are not n




Permanent magnets are used in the construction of ___ motors.I. AC II. D
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C - ANS>D.
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II only
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The invisible magnetic lines that leave the north pole and enter the south
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pole of a magnet are ___. - ANS>A.
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lines of flux n n

, Two unlike poles of magnets brought together cause the magnets to ___
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each other. - ANS>C.n n n




attract


The basic law of magnetism states that unlike poles (south and north, for
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example) ___ each other. - ANS>A. n n n n n




attract


As two magnetic poles of the same polarity get closer together the force o
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f ___ gets stronger. - ANS>B.
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repulsion


If the current flowing through a coil of wire is increased, the magnetic fiel
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d strength ___. - ANS>C.
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also increases
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A coil of wire, when carrying current, acts like a ___. - ANS>B.
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magnet


A coil of wire wrapped around an iron core is a(n) ___ when it carries curr
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ent. - ANS>D.
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