Grounding of a welding machine usually involves _____
a. setting it on bare earth
b. plugging it in to a three-prong receptacle
c. plugging it in to a ground fault circuit interrupter
d. connecting the machine's ground terminal to a known ground source
d
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On a winder stairway, the winder tread width at a point 12" from the narrower end of the winders must be _____.
a. at least 9" b. two-thirds the tread width in the straight portion of the stairway c. 10"-12" d. equal to the tread width in the straight portion of the stairway
A(n) ____ produces a magnetic field.
A. electric current B. coil C. core D. armature
A ________ is a bird used to produce eggs for consumption
a. Layer c. Hybrid b. Broiler d. No answers
When installing the grid in an exposed grid ceiling system, the last component to be installed is the _____
a. wall angle b. main runners c. cross runners (tees) d. hanger inserts