Page 1 of 16
HVAC Excellence ELECTRICITY EXAM
COMPLETE NEWEST QUESTIONS AND
VERIFIED SOLUTIONS LATEST UPDATE
THIS YEAR
QUESTION: How many watts of power are used by a heater operating at 240 volts and drawing
5 amps? - ANSWER-1200 watts
QUESTION: Which of the following meters must use its internal power to check a load or
circuit? - ANSWER-Ohmmeter
QUESTION: In electrical wiring, a black colored wire in an alternating current circuit usually
indicates; - ANSWER-the hot conductor.
QUESTION: Fuses are sized by: - ANSWER-Volts & Amps
QUESTION: 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.
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, Page 2 of 16
QUESTION: 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
QUESTION: Which of the following is generally considered to be within the maximum allowable
(plus or minus) supply voltage variation? - ANSWER-5%
QUESTION: Capacitors are rated in - ANSWER-Microfarads & Volts.
QUESTION: When testing a capacitor with an analog or digital ohmmeter, the meter should; -
ANSWER-measure low resistance then return to high reading.
QUESTION: What is the term used to describe the output side of a transformer? - ANSWER-
Secondary side.
QUESTION: One horsepower is equal to __________ watts. - ANSWER-746
Current flow is: - ANSWER-The flow of electrons in the circuit.
QUESTION: Impedance is: - ANSWER-Opposition to alternating current flow.
QUESTION: Like charges; - ANSWER-repel each other.
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QUESTION: Any material that will readily release electrons is called; - ANSWER-A conductor
QUESTION: The symbol for current is; - ANSWER-I
QUESTION: Which of the following materials would be best suited for use as a semi-conductor?
- ANSWER-silicon
QUESTION: The safety ground conductor is usually color coded; - ANSWER-green or bare.
QUESTION: An electron has; - ANSWER-a negative charge.
QUESTION: Resistance is: - ANSWER-Opposition to current flow.
QUESTION: How much resistance must be placed in a 120 volt circuit in order to limit the
current to 2 amps? - ANSWER-60 Ohms
QUESTION: A parallel circuit contains a 18 ohm and a 9 ohm resistor. The total resistance
equals; - ANSWER-6 ohms.
3
HVAC Excellence ELECTRICITY EXAM
COMPLETE NEWEST QUESTIONS AND
VERIFIED SOLUTIONS LATEST UPDATE
THIS YEAR
QUESTION: How many watts of power are used by a heater operating at 240 volts and drawing
5 amps? - ANSWER-1200 watts
QUESTION: Which of the following meters must use its internal power to check a load or
circuit? - ANSWER-Ohmmeter
QUESTION: In electrical wiring, a black colored wire in an alternating current circuit usually
indicates; - ANSWER-the hot conductor.
QUESTION: Fuses are sized by: - ANSWER-Volts & Amps
QUESTION: 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.
1
, Page 2 of 16
QUESTION: 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
QUESTION: Which of the following is generally considered to be within the maximum allowable
(plus or minus) supply voltage variation? - ANSWER-5%
QUESTION: Capacitors are rated in - ANSWER-Microfarads & Volts.
QUESTION: When testing a capacitor with an analog or digital ohmmeter, the meter should; -
ANSWER-measure low resistance then return to high reading.
QUESTION: What is the term used to describe the output side of a transformer? - ANSWER-
Secondary side.
QUESTION: One horsepower is equal to __________ watts. - ANSWER-746
Current flow is: - ANSWER-The flow of electrons in the circuit.
QUESTION: Impedance is: - ANSWER-Opposition to alternating current flow.
QUESTION: Like charges; - ANSWER-repel each other.
2
, Page 3 of 16
QUESTION: Any material that will readily release electrons is called; - ANSWER-A conductor
QUESTION: The symbol for current is; - ANSWER-I
QUESTION: Which of the following materials would be best suited for use as a semi-conductor?
- ANSWER-silicon
QUESTION: The safety ground conductor is usually color coded; - ANSWER-green or bare.
QUESTION: An electron has; - ANSWER-a negative charge.
QUESTION: Resistance is: - ANSWER-Opposition to current flow.
QUESTION: How much resistance must be placed in a 120 volt circuit in order to limit the
current to 2 amps? - ANSWER-60 Ohms
QUESTION: A parallel circuit contains a 18 ohm and a 9 ohm resistor. The total resistance
equals; - ANSWER-6 ohms.
3
