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Hvac Electrical Study Guide Questions And Answers With Verified Solutions Already Passed!!!
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Hvac Electrical Study Guide Questions And Answers With Verified Solutions Already Passed!!!
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Hvac Electrical Study Guide QuestionsAnd Answers With Verified Solutions
Already Passed!!!
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: silicone
The safety ground conductor is usually color coded:
ANSWER: white
An electron has:
ANSWER: a negative charge
Resistance is:
ANSWER: The opposition of current flow.
How many watts of power are used by a heater operating at 460 volts and
drawing 5 amps?
ANSWER: 2300 watts
What type of meter uses its own battery?
ANSWER: ohmmeter
, In electrical wiring, a black colored wire usually indicates:
ANSWER: the hot conductor
Fuses are sized by:
ANSWER: volts and amps
Two 120 volt incandescent light bulbs are wired in series, one is a 60-watt
bulb, the other is a 4-watt bulb. The results would be:
ANSWER: only the 4-watt bulb will light
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✔✔ 24 watts
what is generally considered to be the maximum allowable (plus or minus) supply
voltage variation - ANSWER✔✔ 5%
capacitors are rated in - ANSWER✔✔ microfarads and voltss
when testing a capacitor with an analog ohmmeter, the needle on the meter should
- ANSWER✔✔ deflect towards zero then return to infinite 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 watts
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
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