ESCO Electrical Test () Questions with
Verified Answers, Guarantee Pass Score
/. 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
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
/.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
/.What is the term used to describe the output side of a transformer? - Answer-✅D
.Secondary side
/.One horsepower is equal to ______ watts. - Answer-✅B. 746
/.A parallel circuit contains an 18 ohm and a 9 ohm resistor. What is the total
resistance? - Answer-✅A.6 ohms
/.In a series circuit, the voltage drop across each load will: - Answer-✅D .Add up to
equal the source voltage
/.Which of the following is equal to 2.1kW? - Answer-✅c .2100 watts
/.A capacitor analyzer is designed to check: - Answer-✅D .The capacitance of the a
capacitor
/.On an electronic oil safety switch, what changes the pressure signal to an electrical
signal? - Answer-✅A.Transducer
/.A three phase load requires a minimum of - Answer-✅A.Three supply lines
/.An electronically commutated motor (ECM) is designed to: - Answer-✅D .Provide
proper airflow under various conditions
/.Resistance can be calculated by: - Answer-✅A.E divided by I
/.The total resistance in a parallel circuit will be: - Answer-✅D .Less than the smallest
resistance
Verified Answers, Guarantee Pass Score
/. 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
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
/.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
/.What is the term used to describe the output side of a transformer? - Answer-✅D
.Secondary side
/.One horsepower is equal to ______ watts. - Answer-✅B. 746
/.A parallel circuit contains an 18 ohm and a 9 ohm resistor. What is the total
resistance? - Answer-✅A.6 ohms
/.In a series circuit, the voltage drop across each load will: - Answer-✅D .Add up to
equal the source voltage
/.Which of the following is equal to 2.1kW? - Answer-✅c .2100 watts
/.A capacitor analyzer is designed to check: - Answer-✅D .The capacitance of the a
capacitor
/.On an electronic oil safety switch, what changes the pressure signal to an electrical
signal? - Answer-✅A.Transducer
/.A three phase load requires a minimum of - Answer-✅A.Three supply lines
/.An electronically commutated motor (ECM) is designed to: - Answer-✅D .Provide
proper airflow under various conditions
/.Resistance can be calculated by: - Answer-✅A.E divided by I
/.The total resistance in a parallel circuit will be: - Answer-✅D .Less than the smallest
resistance
