HVAC - Electricity Exam| Brand
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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
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.
Which of the following statements about current is true? - Answer✅✅Current flow
will increase when voltage increases.
New Exam Questions with 100%
Correct Clear Verified Answers| All
Graded A+|Latest Premium
Update|100% Guaranteed Success.
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
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.
Which of the following statements about current is true? - Answer✅✅Current flow
will increase when voltage increases.
