ESCO ELECTRICAL CERTIFICATION EXAM ACTUAL
EXAM COMPLETE ACCURATE EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) /ALREADY GRADED A+/
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What is current flow? - Answer-D.The flow of electrons in a
circuit
What is impedance? - Answer-A.Opposition to alternating
current
Like charges will - Answer-B.Repel each other
Any material that will readily release electrons is called: -
Answer-B.A conductor
The symbol for current is: - Answer-B. I
Electricity can produce: - Answer-D. All the above
light
heat
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magnetism
The safety ground conductor is usually colored: - Answer-
B.Green
An electron has: - Answer-B.A negative charge
Which of the following materials would be best suited for
use as a semi-conductor? - Answer-D.Silicon
Which of the following meters must use internal power to
check a load or circuit? - Answer-A.Ohmmeter
What would be the result if a 24 volt, 20 ohm contactor coil
was wired in series with a 24 volt, 200 ohm control relay? -
Answer-B.Only the control relay would operate
Three defrost heaters, each 15 ohms, are wired in parallel
to a 120 volt power supply. How many Watts are
consumed? - Answer-C. 2880
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When testing a capacitor with an analog or digital
ohmmeter, the meter should: - Answer-B.Measure low
resistance then return to a high reading
How much resistance must be placed in a 120 volt circuit
to limit the current to 2 amps? - Answer-A.60 ohms
What is resistance? - Answer-A.Opposition to electron flow
In electrical wiring, a black colored wire indicates: -
Answer-A. A hot conductor
How many watts are used by a heater operating on 460
volts and drawing 5 amps? - Answer-D .2300
How are fuses sized? - Answer-D .Both A and B
What is generally considered the maximum allowable
supply voltage variation - Answer-A.5%
Capacitors are rated in: - Answer-D .Both B and C