When the load on the evaporator increases, the TXV ____.

A. increases the flow of refrigerant
B. decreases the flow of refrigerant
C. maintains constant head pressure
D. decreases the pressure drop across the evaporator


Answer: A

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____________________ is generally used to help the electrician interpret the meaning of certain components and find contacts that are controlled by coils.

Fill in the blank(s) with the appropriate word(s).

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A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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The minimum diameter of galvanized pipe allowed for a grounding electrode is _____.

a. 1/2" b. 3/4" c. 1" d. 1-1/4"

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Technician A says that major sources of chemical dangers are from solvents containing chlorinated hydrocarbons. Technician B says that the use of heptane or xylene helps to protect the ozone layer. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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