A big reason that communicating systems improve efficiency is:
A) They monitor and correct power factor.
B) They can make intelligent decisions based on actual operating conditions.
C) They switch faster than relay systems.
D) Relays consume large amounts of power in conventional systems.
B
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Indicate whether the statement is true or false
Whenever possible, the components in a ladder diagram are labeled in numerical order from ____________________ to____________________, and from ____________________ to ____________________.
Fill in the blank(s) with the appropriate word(s).
The main difference between a PAL and a GAL is ________
A) a GAL uses EECMOS technology so it is re-programmable B) a PAL is designed for S0P equations while a GAL is designed for P0S C) a GAL has a programmable AND and OR matrix D) a GAL can implement more complicated expressions than a PAL because it has more product terms
A sure sign of contact failure is discoloration on the contact surfaces.
Answer the following statement true (T) or false (F)