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