Automation System
A flip-flop:

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

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Automation System
A semi-continuous operation means:

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

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