Question 61Refrigeration & AC - Assistant Engineer

The correct answer is B) Hard drawn copper tubing is not easily flared, bent, or swaged, so brazed fittings are commonly used. Hard drawn copper tubing is a rigid, high-strength type of copper tubing that is not easily manipulated like softer, annealed copper tubing. Due to its hardness, hard drawn copper tubing cannot be easily flared, bent, or swaged to change the direction or size of the line. As a result, brazed fittings are commonly used to connect sections of hard drawn copper tubing and make changes in the plumbing system, rather than relying on flare, bend, or swage fittings. The other answer choices are incorrect because they do not accurately describe the characteristics and common practices associated with using hard drawn copper tubing in refrigeration systems.