Author Question: ________ use DC voltage to attract dust and contaminants to an electrically charged media or plate. ... (Read 106 times)

cool · **on:** Jul 24, 2018

________ use DC voltage to attract dust and contaminants to an electrically charged media or plate.

A) Electronic air cleaners B) HEPA filters
C) Ultraviolet lights D) Pleated filters

Question 2

When running the primary and secondary evaporator drain lines:

A) Always run the horizontal portions straight and level.
B) Always run both drains separately.
C) Always trap both drain lines.
D) Always run both drains into a common drain line to avoid reverse flow from one drain to the other.