Most work site fires related to welding operations are caused by _____
a. electrical heaters
b. right angle grinders
c. cutting torches
d. preheating fires
c
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On a car with a MacPherson strut front suspension, a 6 degree difference in left and right SAI angles may cause what during braking?
What will be an ideal response?
If the emission levels on a 4-gas analyzer indicate that both CO and HC are high and both O2 and CO2 are low, what could this indicate?
A. a rich mixture B. a lean mixture C. the stoichiometric mixture D. none of the above
An Irish scientist named Robert Boyle developed laws that describe:
a. how pressure in fluids is transmitted equally to all distances and in all directions. b. how the volume of a gas changes when the pressure changes c. gas volume changes d. variations in pump compression ratios
For castings or other parts that have irregular surfaces, these are often used to establish the position of the part for manufacturing or inspection purposes:
A. Datum planes B. Datum targets C. True positions D. Form tolerances