Automation System
Digitizers can be converted from "dumb" to "smart" through the addition of:

a microprocessor
an electromagnetic coupling
keyboard
None of these
a scanner

ANSWER DOWNLOAD EXAMIANS APP

Automation System
D/A (digital to analog) conversion:

None of these
both (b) and (c)
results in a binary code as the final output
must be fed through a filter to reproduce the original signal accurately
has to be sampled at 1/2 the highest input frequency

ANSWER DOWNLOAD EXAMIANS APP

Automation System
Time proportioning control:

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

ANSWER DOWNLOAD EXAMIANS APP