Positive shutoff fittings allow technicians to reduce the amount of which of the following?
A) Refrigerant spray when connecting to a refrigeration system
B) The amount of refrigerant coming into the hoses
C) Liquid in the unit during evacuation
D) Refrigerant spray when disconnecting from a refrigeration system
D
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Identify the characteristic of high analysis fertilizers
a. will require less storage space c. will contain less filler material b. will require less time to apply d. All answers are correct
A thrust bearing contains 18 steel balls. The steel used weighs 0.283 pound per cubic inch. The diameter of each ball is 0.22 inch. Compute the total weight of the balls in the bearing. Round the answer to 4 significant digits.
Fill in the blank(s) with the appropriate word(s).
The most effective method for maintaining acceptable indoor air quality is:
A) Reduction and/or elimination of the pollutant sources. B) Banks of ultraviolet lights installed in the ductwork and over the coil. C) Increased ventilation. D) Better quality filtration.
What is the most common cause of cranking circuit malfunctions?
A. Sulfated batteries. B. Battery terminal issues. C. Starter motor mechanical failures. D. Corrosion on starter motor or soleniod terminals.