A visual inspection reveals a broken heating element, an open fusible link, and a cracked ceramic insulator. Which of these parts must be replaced?
A) Only the fusible links need to be replaced.
B) All broken parts should be replaced.
C) Only the heating element and the fusible link need to be replaced.
D) Only the heating element needs to be replaced.
B
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The expansion device in a mechanical refrigeration system _____.
a. raises the temperature of the refrigerant b. acts as a heat exchanger c. provides a pressure drop d. raises the pressure of the refrigerant
Besides improving efficiency, insulating the suction line:
A) Prevents stray electrical current from traveling down the pipe. B) Prevents moisture from condensing on the line. C) Serves as a backup sealing system to prevent refrigerant loss. D) Reduces mechanical vibrations set up by the compressor.
Colors from opposite sides of the wheel are ____ colors.
A. hued B. complementary C. analogous D. primary
A run of 1,000 feet with a 1.2% grade will result in a drop of __________ inches.
Fill in the blank(s) with the appropriate word(s).