Automation System
Time proportioning control:

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

ANSWER DOWNLOAD EXAMIANS APP

Automation System
Stepping motors:

can be built to index different amounts by changing the pole configuration
do not require commutators
can run both clockwise and counterclockwise
can run at varying speeds
All of these

ANSWER DOWNLOAD EXAMIANS APP