Automation System
Pressure sensors:

None of these
All of these
use the piezoresistive effect in strain gauge sensors
use capacitive variations to sense pressure
use an aneroid chamber with a variable resistance output

ANSWER DOWNLOAD EXAMIANS APP

Automation System
Time proportioning control:

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

ANSWER DOWNLOAD EXAMIANS APP