The welder’s face and eyes are protected by using a face shield with a dark viewing glass. What is the
classification of the glass and why does it matter?
What will be an ideal response?
The glass is classified as No. 10 shade. The welding arc contains light rays that burn, even from a
distance. Any material that blocks the light also stops the damaging rays because the human eye must
not be exposed to direct light from the welding arc.
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The length of the end pieces for a given radius is calculated by _____.
a. dividing the center-to-center by 2 b. multiplying the center-to-center by 2 c. multiplying the cutback by 4 d. multiplying the number of segments by 4
What can ruminants do that monogastric animals cannot?
A) Digest wood fiber? B) Produce insulin that can be used by all humans? C) Digest grass and hay? D) Produce vitamin A
What is the function of an electrical switch?
What will be an ideal response?
Gibs or dowels on a pillow block housing are there for the purpose of _____
a. tensioning the bearing b. aligning the bearing c. lubricating the bearing d. matching the cap and base