Why must all electrical welding equipment be internally grounded?
A) Because company policy states that it is a requirement
B) Because external grounding is more expensive
C) So the welder does not overheat
D) For reasons of safety
E) None of the above
Question 2
A big reason that communicating systems improve efficiency is
A) they can make intelligent decisions based on actual operating conditions
B) they monitor and correct power factor and
C) relays consume large amounts of power in conventional systems
D) they switch faster than relay systems
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