During testing, fluid leaks through a newly brazed joint. What may have occurred to cause this?
A) The pipe was heated before the fitting.
B) The fitting was heated before the pipe.
C) The pipe was cleaned ½ in beyond the fitting.
D) The pipe was cleaned immediately before brazing.
B
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Answer the following statement true (T) or false (F)
____ is very well suited for making welds on steel, steel alloys (including stainless), nickel alloys, and most other metals other than aluminum or magnesium.
A. Zirconium tungsten B. Pure tungsten C. Thoriated tungsten D. Lanthanum tungsten
The secondary voltage is larger than the primary voltage in a step-up transformer
Indicate whether the statement is true or false
Which of the following is an invalid BCD code?
A) 0011 B) 1101 C) 1001 D) 0101