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Process Control and Instrumentation

Process Control and Instrumentation
Stability of a control system containing a transportation lag can be best analysed by

None of these
Routh test
Frequency response methods
Root locus methods

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Process Control and Instrumentation
Transfer function of transportation lag is

None of these
1/(TS + 1)
E-TS
ETS

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Process Control and Instrumentation
For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a

High thermal conductivity
Small specific heat
All of these
Large area but small mass

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Process Control and Instrumentation
Emission spectroscopy is used for

Determination of CO₂ in gases
NOxdetermination
Solids and metal analysis
Determining water purity

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Process Control and Instrumentation
Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference?

Seebeck effect
None of these
Peltier effect
Thomson effect

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Process Control and Instrumentation
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches

1
∞
-1

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