HVAC Electrical ESCO Questions and Correct Answers/ Latest Update / Already Graded

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HVAC Electrical ESCO Questions and
Correct Answers/ Latest Update /
Already Graded
Impededance




a. Opposition to alternating current flow.


b. Electrical pressure.


C. Amperage.


d. Voltage applied to the circuit.


Ans: a. Opposition to alternating current flow. (All types of resistance

combined)




Like Charges




a. Attract one another.


b. Repel each other.

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c. Are negative.


d. Are positive.


Ans: b. Repel each other.




Any material that will readily release electron called:




a. An insulator.


b. conductor.


c. A resistance.


d. A neutron.


Ans: b. conductor.




Which of the following materials would be best suited for use as a

semi-conductor?




a. Copper.

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b. Bakelite.


C. Aluminum.


d. Silicon.


Ans: d. Silicon.




Which of the following is generally considered to be within the

maximum allowable (plus or minus) supply voltage variation?




a. 5%.


b. 15%.


C. 20%.


d. 30%.


Ans: a. 5%.




In electrical wiring, a black colored wire in an alternating current

circuit usually indicates:

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a. The hot conductor.


b. The neutral conductor.


C. The ground conductor.


d. The safety conductor.


Ans: a. The hot conductor.




Fuses are sized by:




a. Amps & watts.


b. Volts & watts.


C. Watts & ohms.


d. Volts & amps.


Ans: d. Volts & amps.