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HVAC Electrical Questions And Answers With Verified Solutions Already Passed!!!
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HVAC Electrical Questions And Answers With Verified Solutions Already Passed!!!
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HVAC Electrical Questions And AnswersWith Verified Solutions Already
Passed!!!
List what part (voltage source, switch, or load) is checked with the following meter
function "VOLTAGE" - ANSWER✔✔ Voltage source, switch and load.
AC electricity flows? - ANSWER✔✔ Both.....positive to negative and negative to
positive.
When electricity is present, which of the following are also present -
ANSWER✔✔ Heat and magnetism
What voltage is provided by the electric company to a modern residential home? -
ANSWER✔✔ 220VAC
What are the three lines entering the breaker panel? - ANSWER✔✔ Line 1 (hot)
Line 2 (hot) and netural
What is the difference between AC current and DC current? - ANSWER✔✔ DC =
chemical reaction, travels in one direction and power is stored.
AC = can not be stored, travels in both directions and magnetic field.
What is the purpose of a breaker? - ANSWER✔✔ Is a safety device for an
electrical circuit.
What voltage does the average home appliance require to operate - ANSWER✔✔
120V
How does electricity get from one point to another (i.e. from the electric company
to a home)? - ANSWER✔✔ Through insulated conductors such as copper wire.
How does the electric company know how much a single residence has used? -
ANSWER✔✔ Electric meter
, Where does electricity come from? - ANSWER✔✔ Electric company generates
and sends to customer.
What three things are needed for a complete circuit? - ANSWER✔✔ Voltage
source, switch, load
What are some good insulators? - ANSWER✔✔ Fiberglass, plastic, glass, rubber
What are some good conductors - ANSWER✔✔ Copper, gold, aluminum
How many volts are entering the home? Is it AC or DC? - ANSWER✔✔ 240/220
AC
Where would you find DC voltage? - ANSWER✔✔ Battery, cars, cellphone,
power tools etc
What are the two things are needed to obtain a voltage reading? - ANSWER✔✔
Positive and negative
What is the voltage at each fixture when two lights are wired in series? -
ANSWER✔✔ 60V for each fixture. Load splits in half for each bulb/fixture
What is the voltage at each fixture when two lights are wired in parallel? -
ANSWER✔✔ Each fixture/bulb is 120V
How many volts in the electrical outlet, is it AC or DC? - ANSWER✔✔ 120V AC
What is the line voltage side of the transformer called? - ANSWER✔✔ Primary
What is the low or control voltage side of the transformer called - ANSWER✔✔
Secondary
How many volts is line(HOT) voltage? - ANSWER✔✔ 120V
How many volts is low or control voltage? - ANSWER✔✔ 24V
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