Automation System
A semi-continuous operation means:

None of these
each operation in a sequence is continuous, but subsequent operations in the sequence may be different.
coffee breaks are allowed for the operator
a computer is a required part of the machine
the operation is continuous each shift, but stops between shifts

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Automation System
A flip-flop:

None of these
remembers what was previously stored in it
is a combinational logic device
(a) and (c)
is a sequential logic device

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Automation System
The robot:

is very primitive at the present
will be more useful when robot vision is improved significantly
represents the most powerful new industrial automation tool currently on the horizon
None of these
All of these

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Automation System
Direct Numerical Control means:

using one computer to control several machines
eliminating computers from the manufacturing process
None of these
complete elimination of a need for a human operator.
using several computers to control one large machine

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