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Process Control and Instrumentation

Process Control and Instrumentation
Which of the following is an undesirable dynamic characteristic of an instrument?

Dead zone
Reproducibility
Time lag
Static error

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Process Control and Instrumentation
Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C?

Radiation pyrometer
Photoelectric pyrometer
Optical pyrometer
Thermocouples

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Process Control and Instrumentation
In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable.

Controlled
None of these
Load
Manipulated

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Process Control and Instrumentation
Mercury manometer (U-tube type) exemplifies a __________ order system.

Third
Zero
Second
First

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Process Control and Instrumentation
pH meter has

One cell
No cell
Three cells
Two cells

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Process Control and Instrumentation
Continuous measurement of moisture in paper is done by

Sling psychrometer
High resistance Wheatstone's bridge circuit
Weighing
Hair-hygrometer

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