Author Question: Sub-arc welding can utilize either solid or tubular filler metal. Indicate whether the statement ... (Read 71 times)

jon_i · **on:** Jul 26, 2018

Sub-arc welding can utilize either solid or tubular filler metal.

Indicate whether the statement is true or false

Question 2

A viscosity index reflects _____.

a. the lubricating ability of a fluid
b. the speed at which a liquid flows
c. how thick a fluid is at high temperatures
d. the changes in fluid viscosity at different temperatures