What happens to dissolved hydrogen as weld metal cools??
What will be an ideal response?
As the weld metal cools, most of the dissolved hydrogen comes out of solution to form bubbles, which become porosity in the weld metal as it solidifies.?
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The unethical practice of contractors supplying bid amounts from subcontractors to other subcontractors is known as ____.
A. buyout B. bid shopping C. procurement D. purchasing control
What is the technician doing in this illustration?
A) Checking end play
B) Testing bolt torque
C) Adjusting end play
D) Separating the cases
In a two pipe system
A) Each convector is supplied with the same temperature hot water B) All the water flows through each convector in the loop C) The main supply water temperature drops a little through each convector D) The convector can be used for both heating and cooling
As roller chain wears out, it is likely to become:
A. Longer. B. Shorter. C. Brittle. D. Softened.