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
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
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