ESCO ELECTRICAL TEST EXAM
2025/2026 QUESTIONS AND ANSWERS
100% PASS
What is current flow? - ANS D.The flow of electrons in a circuit
What is impedance? - ANS A.Opposition to alternating current
Like charges will - ANS B.Repel each other
Any material that will readily release electrons is called: - ANS B.A conductor
The symbol for current is: - ANS B. I
Electricity can produce: - ANS D. All the above
light
heat
magnetism
The safety ground conductor is usually colored: - ANS B.Green
An electron has: - ANS B.A negative charge
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Which of the following materials would be best suited for use as a semi-conductor? -
ANS D.Silicon
Which of the following meters must use internal power to check a load or circuit? -
ANS 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? - ANS 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? - ANS C. 2880
When testing a capacitor with an analog or digital ohmmeter, the meter should: -
ANS 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? -
ANS A.60 ohms
What is resistance? - ANS A.Opposition to electron flow
In electrical wiring, a black colored wire indicates: - ANS A. A hot conductor
How many watts are used by a heater operating on 460 volts and drawing 5 amps? - ANS D
.2300
How are fuses sized? - ANS D .Both A and B
What is generally considered the maximum allowable supply voltage variation - ANS A.5%
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
2025/2026 QUESTIONS AND ANSWERS
100% PASS
What is current flow? - ANS D.The flow of electrons in a circuit
What is impedance? - ANS A.Opposition to alternating current
Like charges will - ANS B.Repel each other
Any material that will readily release electrons is called: - ANS B.A conductor
The symbol for current is: - ANS B. I
Electricity can produce: - ANS D. All the above
light
heat
magnetism
The safety ground conductor is usually colored: - ANS B.Green
An electron has: - ANS B.A negative charge
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Which of the following materials would be best suited for use as a semi-conductor? -
ANS D.Silicon
Which of the following meters must use internal power to check a load or circuit? -
ANS 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? - ANS 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? - ANS C. 2880
When testing a capacitor with an analog or digital ohmmeter, the meter should: -
ANS 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? -
ANS A.60 ohms
What is resistance? - ANS A.Opposition to electron flow
In electrical wiring, a black colored wire indicates: - ANS A. A hot conductor
How many watts are used by a heater operating on 460 volts and drawing 5 amps? - ANS D
.2300
How are fuses sized? - ANS D .Both A and B
What is generally considered the maximum allowable supply voltage variation - ANS A.5%
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
