Automation System
A favourable reason for automation is to:

raises assembly cost
increase number of operations
decrease throughput
None of these
perform difficult operations

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Automation System
Today, programmable controllers:

can be cost effective even when replacing just a few relays
are relatively low cost compared with the original digital equipment available for industrial control
All of these
are more powerful then the first controllers on the market
None of these

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Automation System
An encoder:

None of these
can have only four keys
converts an input to a binary number
converts a binary number to a decimal number.
is used to send telegraph signals

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