Groove welds are subdivided into several categories. List four of the categories.
What will be an ideal response?
The categories of groove welds include:
• Square groove
• V groove
• Bevel groove
• U groove
• Flare bevel groove
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A major difference between common HVAC systems and air turnover systems is that air turnover systems _____.
a. cannot provide cooling b. are direct-fired units c. are designed to encourage stratification d. often use propeller fans to circulate the air
The intensity of an electrical current is measured in _____________.
Fill in the blank(s) with the appropriate word(s).
What products does a mass market shop usually offer? Name two
What will be an ideal response?
Typically, on mini-split systems the line set going to the outdoor unit carries ________ pressure, ________ temperature saturated liquid and vapor mix. The line going back to the outdoor unit carries ________ pressure superheated vapor
A) low, high, high B) low, low, low C) high, high, low D) low, high, low