Flare nut wrenches are used to ____.
A. tighten or loosen nuts on copper tubing
B. open or close refrigerant service valves
C. tighten nuts that cannot be reached with other wrenches
D. remove hex head screws from refrigerator cabinets
Answer: A
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The process in which heat is applied to remove strains and reduce grain size is known as _____
a. annealing b. tempering c. normalizing d. stress relieving
Three-phase transformers are available in:
A) Alpha and wye configurations. B) Alpha and omega configurations. C) Delta and wye configurations. D) Delta and omega configurations.
When the temperature of the rejected condenser air is much warmer than usual, it can be an indication that:
A) The compressor is dirty. B) The condenser coil is dirty. C) The evaporator coil is dirty. D) The filter is dirty.
Lumber is classified as green or dry. Explain the difference between the two.
What will be an ideal response?