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Process Control and Instrumentation

Process Control and Instrumentation
Use of I-control along with P-control facilitates

Reduction of offset
None of these
Reduction of stability time
Elimination of offset

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Process Control and Instrumentation
Thermal wells are used in the temperature measurement to

Increase the sensitivity
Reduce measuring lag
Increase the fidelity
Guard against corrosive and oxidising action on thermocouple materials

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Process Control and Instrumentation
Identify an unbounded input from inputs whose transfer functions are given below

1/S
1
1/S²
1/(S² + 1)

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Process Control and Instrumentation
Gas chromatography is used for the measurement of

Pressure
Concentration
Flow rate
Temperature

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Process Control and Instrumentation
Range of hydrogen gas constant volume themometer is __________ °C.

-10 to 20
0 to 100
100 - 500
400 - 1000

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Process Control and Instrumentation
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Log-log
Triangular
Ordinary
Semi-log

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