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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

2/s³
4/s²
2/s²
4/s³

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Process Control and Instrumentation
Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a

Bimetallic thermometer
Dilatometer
Beckman thermometer
Mercury thermometer

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Process Control and Instrumentation
The fluid used in hydraulic controller is

Air
Water
Steam
Oil

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Process Control and Instrumentation
The transfer function of a process is 1/(16s² + 8s + 4). If a step change is introduced into the system, then the response will be

None of these
Under damped
Over damped
Critically damped

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Process Control and Instrumentation
Temperature measuring instruments are standardised mostly with __________ points of pure substances.

Neither A nor B Here
Boiling
Both A & B Here
Melting

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Process Control and Instrumentation
Which of the following is not classified as a thermo electric pyrometer

Resistance thermometer
Optical pyrometer (disappearing filament type)
Radiation pyrometer
Thermocouple

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