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The means commonly used as a medium of control in a plant include analog, digital, mechanical, pneumatic and:
1) Manual
2) Magnetic
3) Thermal
4) Electrical
5) Physical
Electrical
A current signal is also called a/an:
1) Ampere signal
2) AC signal
3) Generated signal
4) Power signal
5) DC signal
DC signal
1 PSI equals:
1) 1 kilogram per metre squared
2) 100 kPa
3) 1 kPa
4) 1 Newton per metre squared
5) 6.89 kPa
6.89 kPa
A control loop controller:
1) Does not require a set point value
2) Will always eliminate deviation
3) Measures the manipulated variable value, eliminating the need of a primary element
4) Sends a signal to a primary element
5) Constantly compares input signals to the set point
Constantly compares input signals to the set point
Some of the components required to construct an automatic control loop are a sensing element, a transmitter, a _____ and a control valve.
1) Piping system
2) Controller
3) Transducer
4) Transformer
5) Converter
Controller
A sensing element receives its signal from the:
1) Recorder
2) Control valve
3) Controlled variable
4) Transducer
5) Controller
Controlled variable
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