Basic Instrumentation Ch 5 Flashcards
A signal that has continuous and infinite number of point between its beginning and ending values would refer to an ANALOG signal
a) True
b) False
a) True
Voltage transmitter are 4-wire transmitters
a) True
b) False
a) true
On a proportional controller the desired set point and proportional band are usually adjusted with a potentiometer
a) True
b) False
a) True
Adding time is the time it takes the controller to adjust itself back to its set point
a) True
b) False
a) True
A proportional-plus-integral controller can be used for the control of flow, gas and liquid pressure or temperature and level applications
a) True
b) False
a) True
PID control systems can be used in all systems but perform especially well in systems that have long delays
a) True
b) False
a) true
PLC’s are programmable logic controllers that perform many logic functions
a) True
b) False
a) True
Communications between controllers and computers allows:
a) data to be gathered
b) the control of adjustments
c) the operation of master-slave devices
d) all above
d) all above
Human Machine Interface is equipment that allows the operator to interface with the system
a) True
b) False
a) true
Data transmission rate is usually expressed in:
a) watts
b) free air
c) hertz
d) bauds
d) bauds
