Hard copper tubing can be joined by:

Hard copper tubing can be joined by:
 
  A) Compression fittings. B) Soldering and brazing.
  C) Flare fittings. D) Brazing, soldering, flaring, or compression.

---

[Ques. 2] The three types of air-cooled condenser coil construction found on residential air-conditioning units today include:
 
  A) Tube-and-fin, spine-fin, and microchannel. B) Wired, wireless, and adaptive.
  C) Iron, aluminum, and steel. D) Flat plate, bare tube, and tube-and-fin.

---

[Ques. 3] The preferred method of cutting copper tubing for a refrigeration system is with:
 
  A) A tubing cutter. B) A hacksaw. C) A cutting torch. D) A circular saw.

---

[Ques. 4] What is the primary advantage of a remote air-cooled condenser on an ice machine?
 
  A) Installation is easier.
  B) The ice freezes faster.
  C) The heat generated by the ice machine is expelled outside instead of into the kitchen.
  D) The compressor noise is reduced.

---

[Ques. 5] The halogen family of chemicals includes:
 
  A) Carbon and hydrogen.
  B) Chlorine, fluorine, and bromine.
  C) Oxygen, carbon, and hydrogen.
  D) All the chemical elements found in refrigerants are halogens.