In a wye-connected system, the line voltage is higher than the phase voltage by a factor of the square root of ____.
a. 2
b. 3
c. 5
d. 7
b. 3
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A(n) ____ occurs when a flame goes out with a loud snap or pop.
A. overheating B. flashback C. burn D. backfire
For many years, scientists recognized only three kingdoms
Indicate whether the statement is true or false
Which of these terms refers to the ability to hear and understand what the customer is saying in a way that demonstrates your understanding to the customer?
A) Active listening B) Artful listening C) Active hearing D) Passive listening
A bi-flow thermostatic expansion valve:
A) Can be used with two different refrigerants by selecting the correct flow. B) Can be used with two different capacity units by selecting the correct flow. C) Allows refrigerant flow in both directions. D) Can be used for creating two stages of heating or cooling.