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Process Control and Instrumentation

Process Control and Instrumentation
For an input forcing function, X(t) = 2t², the Laplace transform of this function is

4/s²
4/s³
2/s³
2/s²

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Process Control and Instrumentation
Compositional analysis of flue gas coming out of a furnace in respect of O₂ and CO₂% can be continuously done by a/an

Thermal conductivity cell
Chromatograph
Zirconia probe
Orsat apparatus

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Process Control and Instrumentation
A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same

All of these
Accuracy (± 1% of span)
Temperature measuring range (- 40°C to 450°C)
Speed of response

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

1/S²
1
1/S
1/(S² + 1)

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Process Control and Instrumentation
Liquid column manometers are used for measuring the pressure __________ kgf/cm² .

< 10 (gage)
< 3 (gage)
> 2(gage)
< atmospheric

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Process Control and Instrumentation
The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is

1
2
3
4

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