When driving wood screws in hardwood, it is usually necessary to _____.
a. apply considerable torque
b. use a power screwdriver
c. drill a pilot hole
d. recess the screw head
c. drill a pilot hole
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The useful life of a squirrel cage induction motor depends largely on the condition of its _____.
a. bearings b. insulation c. fins d. windings
Which steel sections are commonly used for columns and which for beams?
What will be an ideal response?
Plant tissue testing may be useful in all of the following EXCEPT ____
a. determining trace element problems b. determining soil acidity c. distinguishing symptoms of nutrient problems from disease or other problems d. indicating nutrient uptake problems e. checking the effectiveness of a fertilizer program
Powder metallurgy process uses metal-alloyed powders and feeds them into the die where it is compacted to form into a desired shape.
Answer the following statement true (T) or false (F)