Automation System
Time proportioning control:

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

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP