A bi-flow expansion valve:
A) Has both a low flow and a high flow setting.
B) Can be used with two different refrigerants.
C) Provides flow out of two ports simultaneously, eliminating the need for a refrigerant distributor.
D) Is designed to allow refrigerant flow in both directions.
D
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Oblique drawings are not ________ drawings.
Fill in the blank(s) with the appropriate word(s).
A good general rule about hearing protection is that it should be used if you must raise your voice for
someone to hear you when they are _____. a. 2 feet (61 cm) away b. 3 feet (91 cm) away c. 5 feet (1.5 m) away d. 8 feet (2.4 m) away
Why are the input variables to a PAL buffered?
A) To prevent loading by a large number of AND gate inputs B) To protect the inputs during programming of the PAL C) To allow the input to be enabled D) To prevent power drain when the inputs are not changing
Which of the following would NOT cause a high pressure fault?
A. Fan drive failure B. Evaporator blockage C. Condenser blockage D. Refrigerant overcharge