ESCO ELECTRICAL CERTIFICATION EXAM
ACTUAL EXAM COMPLETE ACCURATE EXAM
QUESTIONS WITH DETAILED VERIFIED ANSWERS
(100% CORRECT ANSWERS) /ALREADY GRADED A+
What is current flow? - ANSWER The flow of electrons in a circuit
What is impedance? - ANSWER Opposition to alternating current
Like charges will - ANSWER Repel each other
Any material that will readily release electrons is called: - ANSWER A conductor
The symbol for current is: - ANSWER " I "
Electricity can produce: - ANSWER Light, heat and magnetism
The safety ground conductor is usually colored: - ANSWER Green
An electron has: - ANSWER A negative charge
Which of the following materials would be best suited for use as a semi-conductor? -
ANSWER Silicon
Which of the following meters must use internal power to check a load or circuit? -
ANSWER Ohmmeters
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 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 2880
When testing a capacitor with an analog or digital ohmmeter, the meter should: -
ANSWER 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 60 ohms
What is resistance? - ANSWER Opposition to electron flow
In electrical wiring, a black colored wire indicates: - ANSWER A hot conductor
, How many watts are used by a heater operating on 460 volts and drawing 5 amps? -
ANSWER 2300
How are fuses sized? - ANSWER Through volts & amps
What is generally considered the maximum allowable supply voltage variation -
ANSWER 5%
Capacitors are rated in: - ANSWER Microfarad
What is the term used to describe the output side of a transformer? - ANSWER
Secondary side
One horsepower is equal to ______ watts. - ANSWER 746
A parallel circuit contains an 18 ohm and a 9 ohm resistor. What is the total resistance?
- ANSWER 6 ohms
In a series circuit, the voltage drop across each load will: - ANSWER Add up to equal
the source voltage
Which of the following is equal to 2.1kW? - ANSWER 2100 watts
A capacitor analyzer is designed to check: - ANSWER The capacitance of the a
capacitor
On an electronic oil safety switch, what changes the pressure signal to an electrical
signal? - ANSWER Transducer
A three phase load requires a minimum of - ANSWER Three supply lines
An electronically commutated motor (ECM) is designed to: - ANSWER Provide proper
airflow under various conditions
Resistance can be calculated by: - ANSWER E divided by I
The total resistance in a parallel circuit will be: - ANSWER Less than the smallest
resistance
Which of the following statements about current is true? - ANSWER Current flow will
increase when voltage increases
When resistors are wired parallel: - ANSWER The voltage drop across each resistor will
be the same as the applied source voltage
ACTUAL EXAM COMPLETE ACCURATE EXAM
QUESTIONS WITH DETAILED VERIFIED ANSWERS
(100% CORRECT ANSWERS) /ALREADY GRADED A+
What is current flow? - ANSWER The flow of electrons in a circuit
What is impedance? - ANSWER Opposition to alternating current
Like charges will - ANSWER Repel each other
Any material that will readily release electrons is called: - ANSWER A conductor
The symbol for current is: - ANSWER " I "
Electricity can produce: - ANSWER Light, heat and magnetism
The safety ground conductor is usually colored: - ANSWER Green
An electron has: - ANSWER A negative charge
Which of the following materials would be best suited for use as a semi-conductor? -
ANSWER Silicon
Which of the following meters must use internal power to check a load or circuit? -
ANSWER Ohmmeters
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 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 2880
When testing a capacitor with an analog or digital ohmmeter, the meter should: -
ANSWER 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 60 ohms
What is resistance? - ANSWER Opposition to electron flow
In electrical wiring, a black colored wire indicates: - ANSWER A hot conductor
, How many watts are used by a heater operating on 460 volts and drawing 5 amps? -
ANSWER 2300
How are fuses sized? - ANSWER Through volts & amps
What is generally considered the maximum allowable supply voltage variation -
ANSWER 5%
Capacitors are rated in: - ANSWER Microfarad
What is the term used to describe the output side of a transformer? - ANSWER
Secondary side
One horsepower is equal to ______ watts. - ANSWER 746
A parallel circuit contains an 18 ohm and a 9 ohm resistor. What is the total resistance?
- ANSWER 6 ohms
In a series circuit, the voltage drop across each load will: - ANSWER Add up to equal
the source voltage
Which of the following is equal to 2.1kW? - ANSWER 2100 watts
A capacitor analyzer is designed to check: - ANSWER The capacitance of the a
capacitor
On an electronic oil safety switch, what changes the pressure signal to an electrical
signal? - ANSWER Transducer
A three phase load requires a minimum of - ANSWER Three supply lines
An electronically commutated motor (ECM) is designed to: - ANSWER Provide proper
airflow under various conditions
Resistance can be calculated by: - ANSWER E divided by I
The total resistance in a parallel circuit will be: - ANSWER Less than the smallest
resistance
Which of the following statements about current is true? - ANSWER Current flow will
increase when voltage increases
When resistors are wired parallel: - ANSWER The voltage drop across each resistor will
be the same as the applied source voltage
