Author Question: The economizer on a commercial packaged air conditioning system A) Limits the operating cycles of ... (Read 81 times)

j.rubin · **on:** Jul 26, 2018

The economizer on a commercial packaged air conditioning system

A) Limits the operating cycles of the system to no more than 15 minutes
B) Reduces the voltage to the compressor during peak loads to save power
C) Uses outdoor air to provide cooling at low ambient temperatures
D) Reduces the indoor blower speed during peak loads to produce cooler air and save energy

Question 2

The three major electrical defects in compressor motors that can be identified using an ohm meter are:

A) Phased, unbalanced, or blown.
B) Open, shorted, or grounded.
C) Locked, under capacity, and unbalanced.
D) Single phasing, dual phasing, and three phasing.