Author Question: In most 24 V AC low-voltage systems the red wire is hot, the yellow wire is the cooling circuit, and ... (Read 73 times)

Alygatorr01285 · **on:** Jul 24, 2018

In most 24 V AC low-voltage systems the red wire is hot, the yellow wire is the cooling circuit, and the green wire controls the:

A) Compressor. B) Gas valve. C) Heater element. D) Fan circuit.

Question 2

Compared to PSC motors, brushless DC motors:

A) More efficient and better suited for variable-speed applications.

B) More efficient, but not well suited for variable-speed applications.
C) Inexpensive, but also less efficient.
D) Are less efficient, but well suited for variable-speed applications.