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HVAC Electric Review 2 Questions And Answers With Verified Solutions Already Passed!!!
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HVAC Electric Review 2 Questions And Answers With Verified Solutions Already Passed!!!
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HVAC Electric Review 2 Questions AndAnswers With Verified Solutions Already
Passed!!!
Resistance is?
ANSWER: Opposition to current flow
An electron has?
ANSWER: A negative charge
Impedance is?
ANSWER: Opposition to alternating current flow
Current flow is?
ANSWER: Electron flow in a circuit
The safety ground conductor is usually color coded?
ANSWER: Green or bare
Like charges?
ANSWER: Repel each other
The symbol for current is?
ANSWER: I
Any material that will readily release electrons is called?
ANSWER: A conductor
, Which of the following materials would be best suited for use as a semi-
conductor?
ANSWER: Silicon
How many watts of power are used by a heater operating at 240 volts and
drawing 5 amps?
ANSWER: 1200 watts
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
What would be the result if a 24-volt, 20-ohm low voltage contractor coil were
wired in series with a 24-volt, 200-ohm control relay coil?
ANSWER: Only the control relay would operate.
Fuses are sized by?
ANSWER: Volts & Amps
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
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