ESCO ELECTRICAL CERTIFICATION EXAM
QUESTIONS WITH VERIFIED ANSWERS 2026 |
Exam Prep Bundle | A+ Verified
• D.The flow of electrons in a circuit -✓✓What is current flow?
• A.Opposition to alternating current -✓✓What is impedance?
• B.Repel each other -✓✓Like charges will
• B.A conductor -✓✓Any material that will readily release electrons is called:
• B. I -✓✓The symbol for current is:
• D. All the above
light
heat
magnetism -✓✓Electricity can produce:
• B.Green -✓✓The safety ground conductor is usually colored:
• B.A negative charge -✓✓An electron has:
• D.Silicon -✓✓Which of the following materials would be best suited for use as a semi-
conductor?
• A.Ohmmeter -✓✓Which of the following meters must use internal power to check a
load or circuit?
• B.Only the control relay would operate -✓✓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?
• C. 2880 -✓✓Three defrost heaters, each 15 ohms, are wired in parallel to a 120 volt
power supply. How many Watts are consumed?
• B.Measure low resistance then return to a high reading -✓✓When testing a capacitor
with an analog or digital ohmmeter, the meter should:
• A.60 ohms -✓✓How much resistance must be placed in a 120 volt circuit to limit the
current to 2 amps?
, • A.Opposition to electron flow -✓✓What is resistance?
• A. A hot conductor -✓✓In electrical wiring, a black colored wire indicates:
• D .2300 -✓✓How many watts are used by a heater operating on 460 volts and
drawing 5 amps?
• D .Both A and B -✓✓How are fuses sized?
• A.5% -✓✓What is generally considered the maximum allowable supply voltage
variation
• D .Both B and C -✓✓Capacitors are rated in:
• D .Secondary side -✓✓What is the term used to describe the output side of a
transformer?
• B. 746 -✓✓One horsepower is equal to ______ watts.
• A.6 ohms -✓✓A parallel circuit contains an 18 ohm and a 9 ohm resistor. What is the
total resistance?
• D .Add up to equal the source voltage -✓✓In a series circuit, the voltage drop across
each load will:
• c .2100 watts -✓✓Which of the following is equal to 2.1kW?
• D .The capacitance of the a capacitor -✓✓A capacitor analyzer is designed to check:
• A.Transducer -✓✓On an electronic oil safety switch, what changes the pressure
signal to an electrical signal?
• A.Three supply lines -✓✓A three phase load requires a minimum of
• D .Provide proper airflow under various conditions -✓✓An electronically commutated
motor (ECM) is designed to:
• A.E divided by I -✓✓Resistance can be calculated by:
• D .Less than the smallest resistance -✓✓The total resistance in a parallel circuit will
be:
• B.Current flow will increase when voltage increases -✓✓Which of the following
statements about current is true?
QUESTIONS WITH VERIFIED ANSWERS 2026 |
Exam Prep Bundle | A+ Verified
• D.The flow of electrons in a circuit -✓✓What is current flow?
• A.Opposition to alternating current -✓✓What is impedance?
• B.Repel each other -✓✓Like charges will
• B.A conductor -✓✓Any material that will readily release electrons is called:
• B. I -✓✓The symbol for current is:
• D. All the above
light
heat
magnetism -✓✓Electricity can produce:
• B.Green -✓✓The safety ground conductor is usually colored:
• B.A negative charge -✓✓An electron has:
• D.Silicon -✓✓Which of the following materials would be best suited for use as a semi-
conductor?
• A.Ohmmeter -✓✓Which of the following meters must use internal power to check a
load or circuit?
• B.Only the control relay would operate -✓✓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?
• C. 2880 -✓✓Three defrost heaters, each 15 ohms, are wired in parallel to a 120 volt
power supply. How many Watts are consumed?
• B.Measure low resistance then return to a high reading -✓✓When testing a capacitor
with an analog or digital ohmmeter, the meter should:
• A.60 ohms -✓✓How much resistance must be placed in a 120 volt circuit to limit the
current to 2 amps?
, • A.Opposition to electron flow -✓✓What is resistance?
• A. A hot conductor -✓✓In electrical wiring, a black colored wire indicates:
• D .2300 -✓✓How many watts are used by a heater operating on 460 volts and
drawing 5 amps?
• D .Both A and B -✓✓How are fuses sized?
• A.5% -✓✓What is generally considered the maximum allowable supply voltage
variation
• D .Both B and C -✓✓Capacitors are rated in:
• D .Secondary side -✓✓What is the term used to describe the output side of a
transformer?
• B. 746 -✓✓One horsepower is equal to ______ watts.
• A.6 ohms -✓✓A parallel circuit contains an 18 ohm and a 9 ohm resistor. What is the
total resistance?
• D .Add up to equal the source voltage -✓✓In a series circuit, the voltage drop across
each load will:
• c .2100 watts -✓✓Which of the following is equal to 2.1kW?
• D .The capacitance of the a capacitor -✓✓A capacitor analyzer is designed to check:
• A.Transducer -✓✓On an electronic oil safety switch, what changes the pressure
signal to an electrical signal?
• A.Three supply lines -✓✓A three phase load requires a minimum of
• D .Provide proper airflow under various conditions -✓✓An electronically commutated
motor (ECM) is designed to:
• A.E divided by I -✓✓Resistance can be calculated by:
• D .Less than the smallest resistance -✓✓The total resistance in a parallel circuit will
be:
• B.Current flow will increase when voltage increases -✓✓Which of the following
statements about current is true?
