Specific gravity is used in the HVACR industry:
A) For sizing gas lines. B) For recovering refrigerant.
C) For determining system capacity. D) For charging air conditioners.
A
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When making the connections for a three-way switch circuit, which of the following rules should be observed?
a. Connect the travelers. b. Do not connect the neutral to the light. c. Do not connect the hot conductor to the common terminal. d. Avoid connecting either side of the light to the common terminal.
A 1/6 bend cast iron fitting turns how many degrees?
A. 45° B. 60° C. 75° D. 90°
Which type of flow meter does not use inferred readings to determine flow?
A. differential pressure B. positive displacement C. velocity D. electronic E. B or C
Because of the potential dangers associated with nuclear power, all nuclear power plants in the United States are regulated by the _______________
Fill in the blank(s) with the appropriate word(s).