Exam (elaborations)
IEC second year second semester first quarterly exam
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IEC second year second semester first quarterly exam
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IEC SECOND YEAR SECONDSEMESTER FIRST QUARTERLY EXAM
QUESTIONS & 100% VERIFIED
CORRECT ANSWERS GUARANTEED A+
c If the RMS value is 125 volts, what is the peak value?
a.128.53
b.201.32
c.176.75
d.180.53 - 176.75
When AC current passes through a circuit conductor or a connected load, it creates ___ that creates (or
induces) a voltage in the circuit that actually opposes the applied voltage.
a.a magnetic field
b.static electricity
c.DC voltage
d.pure resistance - a magnetic field
A coil of wire wrapped around an iron core is a(n) ___ when it carries current.
a.motor
b.electromagnet
c.capacitor
d.resistor - electromagnet
, A coil of wire, when carrying current, acts like a ___.
a.resistor
b.magnet
c.motor
d.capacitor - magnet
One AC voltage cycle is completed in ___ degrees. - 360
Each phase of three-phase AC power is offset by ___ degrees. - 120
Which of the conversion formulas listed below is correct?
RMS = Peak ÷ 0.707
b.RMS = Peak x 1.414
c.RMS = Peak x 0.707
d.RMS = Peak x 2 - RMS = Peak x 0.707
RMS is an abbreviation for ___. - Root Mean Square
___ when current flows in a conductor.
.Heat is generated
b.A magnetic field is created
c.both a and b
d.neither a nor b - both a and b
The magnetic field strength around a conductor is at its maximum when the AC current is at ___
degrees. - 90
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