On a groove weld, the bead width should not exceed the width of the groove by more than _____

a. 1/6? (1.6 mm)
b. 1/8? (3.2 mm)
c. 1/4? (6.4 mm)
d. 3/8? (10 mm)


b

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Excessive oxygen in the exhaust gas stream will cause a zirconia oxygen sensor to:

A. stay above 450mv B. stay below 450mv C. maintain 450mv D. none of the above

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Describe the power supply of the PLC.

What will be an ideal response?

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What is the volume of the container in the figure, in gallons? All dimensions are outside measurements, and the plate is 1/8” thick. Carry the answer to two decimal places.



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What key component of a natural gas burner is used to automatically ignite the flammable air and fuel mixture at the tip of the burner?

A. Spiders B. Impellers C. Igniters D. Knockout pots

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