?For an air-to-water heat pump, COP generally increases with increasing outdoor temperature.
Answer the following statement true (T) or false (F)
True
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The use of a coolant exchange machine is helpful in preventing ________ from entering the cooling system.
A) Oil B) Hose residue C) Excessive vibrations D) Air
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Define alternating voltage.
What will be an ideal response?
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Technician A says that suction lines become very warm during A/C operation. Technician B says that discharge lines connect the compressor to the condenser. Who is correct?
A. Tech A B. Tech B C. Both D. Neither
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When copper is being brazed to steel _____
A) the technique is identical to brazing copper to copper B) more heat is applied to the steel fitting C) a filler metal with a high phosphorus content is best D) a filler metal with a high silver content is used
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