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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

Routh test
Frequency response methods
Root locus methods
None of these

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Process Control and Instrumentation
Paramagnetism method is not used for the composition determination of __________ in gases.

Oxygen
Carbon dioxide
Oxides of nitrogen
Any of these

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Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

Chromel-alumel
Platinum-platinum+rhodium
Iron-constantan
None of these

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Process Control and Instrumentation
E.m.f. generated by thermocouples is of the order of

Millivolts
Volts
Kilo volts
Microvolts

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

Non-isothermal CSTR
Isothermal CSTR
None of these
Mixer

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Process Control and Instrumentation
An amplitude ratio of 0.1 corresponds to __________ decibels.

-20
10
20
-10

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