What is the purpose of annealing copper tubing?
A) To harden the tubing and improve its strength
B) To prepare the tubing for brazing
C) To allow the tubing to be formed without cracking or buckling
D) To remove impurities from the copper
C
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Which type of circuit is uncommon in HVACR work?
a. Series circuit b. Resistive circuit c. Parallel circuit d. Transformer-powered circuit
Describe proper lifting techniques.
What will be an ideal response?
Which of the following is true of soldering and brazing fluxes?
A. They will remove dirt and oil. B. They will remove paint and glues. C. They eliminate the need for joint cleaning. D. They will remove light surface oxides.
Carry the answer to three decimal places. What is the total thickness of these shims taken from a bearing: 0.007 inch, 0.125 inch, 0.140 inch, 0.187 inch, and 0.004 inch?
Fill in the blank(s) with the appropriate word(s).