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Process Control and Instrumentation

Process Control and Instrumentation
Starting temperature of optical radiation pyrometer is __________ °C.

400
800
1200
1500

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Process Control and Instrumentation
With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer

Remains constant
Increases exponentially
Decreases
Increases

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Process Control and Instrumentation
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their

Low thermal conductivity
Low flash point
High viscosity index
Low electrical conductivity

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Process Control and Instrumentation
Which of the following judges the accuracy of an instrument?

Dead zone
Static error
None of these
Drift

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Process Control and Instrumentation
Instrumentation in a plant offers the advantage of

Greater safety of operation
All of these
Better quality of product
Greater operation economy

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Process Control and Instrumentation
__________ controller has the maximum stabilising time.

PD
PID
PI
P

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