An advantage of a "series flow" configuration of ground loops is ____.
A. smaller diameter pipes
B. ease of removing trapped air
C. lower installation costs
D. less antifreeze is required
Answer: B
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Which of the following should be used to cut EMT?
a. Pipe cutter b. Hacksaw c. Table saw d. Chop saw
Which of the following is true of solenoids?
A. They convert electrical energy to mechanical energy. B. They control the flow of hydraulic fluid. C. They control power flow. D. They control shift points.
Which of the following is not a key characteristic of a new basic technology?
A. Reliability B. Ease of use C. Compatibility D. Corporate governance
If arc length is shortened, metal transferring across the gap may short out the electrode, causing it to ____.
A. produce excessive slag B. stick to the plate C. burn through the metal D. produce excessive spatter