An indication that proves all liquid refrigerant has changed into a vapor within the evaporator is _____
a. the presence of some superheat
b. a sudden increase in pressure
c. a sudden decrease in pressure
d. the presence of some subcooling
a
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Which of the following building types would be good candidates for rooftop air conditioning units? Select all that apply.
A) Low rise office. B) Gymnasium. C) Big box retail. D) Elementary school.
The pressure control solenoid provides ________ fluid pressure with low amperage current flow.
A) Higher B) Lower C) Restricted D) Even
Manure can be used on horse pastures to increase the nitrogen level in the soil
Indicate whether the statement is true or false.
Borescopes are a form of visual inspection and are used to detect _____ pipe
A) surface flaws inside B) surface flaws outside C) subsurface flaws outside D) subsurface flaws inside