Automation System
Relay ladder logic is used in a PC because:

it is the best industrial control language ever developed.
None of these
most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use
All of these
it is impossible to write a control program for a machine in any other logic

ANSWER DOWNLOAD EXAMIANS APP

Automation System
An encoder:

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

ANSWER DOWNLOAD EXAMIANS APP

Automation System
Time proportioning control:

a and b above.
is less efficient than normal PID control
can be used on a PM550 programmable process controller
None of these
cannot use a TM990 micro¬computer

ANSWER DOWNLOAD EXAMIANS APP