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Process Control and Instrumentation

Process Control and Instrumentation
The transfer function of a pure dead time system with dead time τd is

1/(τds + 1)
Τds + 1
Eτds
E-τds

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Process Control and Instrumentation
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a

Reistance thermometer
Vapor pressure thermometer
Mercury in glass thermometer
Thermocouple

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Process Control and Instrumentation
Liquid argon level in a pressurised storage tank (at 3 kg/cm² ) is measured by a/an

External float gage
None of these
Differential pressure gage
Gage glass

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Process Control and Instrumentation
On-off controllers are normally used for

Low loads
Temperature changes
None of these
Flow rate changes

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Process Control and Instrumentation
In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.

Triangular
Log-lag
Ordinary
Semi-log

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Process Control and Instrumentation
A non-linear chemical system is exemplified by a/an

Mixer
None of these
Non-isothermal CSTR
Isothermal CSTR

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