The E7018 electrode should not be weaved wider than ____ times the electrode diameter because very little shielding gas is produced.
A. one and a half
B. two
C. two and a half
D. three
Answer: C
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Match the type of pipe fitting to the description:
I. Plug II. Cap III. Bushing IV. Flange a. Used to close (seal) the open end of a pipe; may be threaded, glued, or welded. b. Threaded on both the internal and external surfaces; used to join two pipes of differing sizes. c. Consists of a mating plate used to join two pieces of pipe or a valve to a piece of pipe. d. Used to close the end of a piping run; the threading is male and fits into a female-threaded fitting; can be glued, threaded, or welded into place.
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What will be an ideal response?
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A. sensing bulb B. bimetal C. thermistors D. mercury tubes