HVAC Excellence - ELECTRICITY Exam LATEST WITH QUESTIONS AND CORRECT VERIFIED
ANSWERS GRADED A+
Current flow is: - (answer)The flow of electrons in the circuit.
Impedance is: - (answer)Opposition to alternating current flow.
Like charges; - (answer)repel each other.
Any material that will readily release electrons is called; - (answer)A conductor
The symbol for current is; - (answer)I
Which of the following materials would be best suited for use as a semi-conductor? - (answer)silicon
The safety ground conductor is usually color coded; - (answer)green or bare.
An electron has; - (answer)a negative charge.
Resistance is: - (answer)Opposition to current flow.
How many watts of power are used by a heater operating at 240 volts and drawing 5 amps? -
(answer)1200 watts
Which of the following meters must use its internal power to check a load or circuit? -
(answer)Ohmmeter
In electrical wiring, a black colored wire in an alternating current circuit usually indicates; - (answer)the
hot conductor.
Fuses are sized by: - (answer)Volts & Amps
, HVAC Excellence - ELECTRICITY Exam LATEST WITH QUESTIONS AND CORRECT VERIFIED
ANSWERS GRADED A+
What would be the result, if a 24 volt, 20-ohm low voltage conta ctor coil were wired in series with a 24
volt, 200-ohm control relay coil? - (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
of power will be used? - (answer)2880 Watts
Which of the following is generally considered to be within the maximum allowable (plus or minus)
supply voltage variation? - (answer)5%
Capacitors are rated in - (answer)Microfarads & Volts.
When testing a capacitor with an analog or digital ohmmeter, the meter should; - (answer)measure low
resistance then return to high reading.
What is the term used to describe the output side of a transformer? - (answer)Secondary side.
One horsepower is equal to __________ watts. - (answer)746
How much resistance must be placed in a 120 volt circuit in order to limit the current to 2 amps? -
(answer)60 Ohms
A parallel circuit contains a 18 ohm and a 9 ohm resistor. The total resistance equals; - (answer)6 ohms.
In a series circuit, the voltage drop across each resistance (load) will. - (answer)add up to equal the
source voltage.
The total resistance of a parallel circuit will be; - (answer)less than the smallest resistance.
ANSWERS GRADED A+
Current flow is: - (answer)The flow of electrons in the circuit.
Impedance is: - (answer)Opposition to alternating current flow.
Like charges; - (answer)repel each other.
Any material that will readily release electrons is called; - (answer)A conductor
The symbol for current is; - (answer)I
Which of the following materials would be best suited for use as a semi-conductor? - (answer)silicon
The safety ground conductor is usually color coded; - (answer)green or bare.
An electron has; - (answer)a negative charge.
Resistance is: - (answer)Opposition to current flow.
How many watts of power are used by a heater operating at 240 volts and drawing 5 amps? -
(answer)1200 watts
Which of the following meters must use its internal power to check a load or circuit? -
(answer)Ohmmeter
In electrical wiring, a black colored wire in an alternating current circuit usually indicates; - (answer)the
hot conductor.
Fuses are sized by: - (answer)Volts & Amps
, HVAC Excellence - ELECTRICITY Exam LATEST WITH QUESTIONS AND CORRECT VERIFIED
ANSWERS GRADED A+
What would be the result, if a 24 volt, 20-ohm low voltage conta ctor coil were wired in series with a 24
volt, 200-ohm control relay coil? - (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
of power will be used? - (answer)2880 Watts
Which of the following is generally considered to be within the maximum allowable (plus or minus)
supply voltage variation? - (answer)5%
Capacitors are rated in - (answer)Microfarads & Volts.
When testing a capacitor with an analog or digital ohmmeter, the meter should; - (answer)measure low
resistance then return to high reading.
What is the term used to describe the output side of a transformer? - (answer)Secondary side.
One horsepower is equal to __________ watts. - (answer)746
How much resistance must be placed in a 120 volt circuit in order to limit the current to 2 amps? -
(answer)60 Ohms
A parallel circuit contains a 18 ohm and a 9 ohm resistor. The total resistance equals; - (answer)6 ohms.
In a series circuit, the voltage drop across each resistance (load) will. - (answer)add up to equal the
source voltage.
The total resistance of a parallel circuit will be; - (answer)less than the smallest resistance.
