A big reason that communicating systems improve efficiency is:
A) They monitor and correct power factor.
B) They switch faster than relay systems.
C) Relays consume large amounts of power in conventional systems.
D) They can make intelligent decisions based on actual operating conditions.
D
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Because blocks are heavy, hollow, and somewhat awkward to handle, care must be taken to prevent them from spalling, which is also known as ______ .
A. sinking B. falling C. breaking D. chipping
The input I/O uses ____________________ to electrically separate the incoming signal from the central processing unit (CPU).
Fill in the blank(s) with the appropriate word(s).
A track burner is a device used to _____.
a. cut railroad tracks b. weld pipe c. cut or bevel in a straight line d. cut holes in plate
If the south pole of a bar magnet is brought close to the north pole of another bar magnet, they will ____________________ each other.
Fill in the blank(s) with the appropriate word(s).