Why are time-delay fuses or HVACR-rated circuit breakers used?
A) They are required to meet current electrical codes.
B) They are cheaper than standard fuses and circuit breakers.
C) They are easier to install than standard fuses and circuit breakers.
D) They are used to prevent nuisance tripping when the compressor starts.
D
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The abbreviation for an entrance ell (elbow) is _____.
a. SLB b. ELLB c. EE d. IEEE
The current relay is built much like a solenoid, with copper wire wrapped around a steel hollow core holding a steel plunger.
Answer the following statement true (T) or false (F)
The assembly method of estimating is less accurate than the single-rate methods.
Answer the following statement true (T) or false (F)
Which of the following statements is true?
A) Rill erosion channels can be removed by ordinary cultivation. B) Rill erosion is the most serious in forested areas. C) Sheet erosion is most obvious from a distance. D) Rill erosion is initiated before water concentrates in small 1-2 cm channels. E) Gully erosion carries the most sediment away from lands in the United States.