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Process Control and Instrumentation

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

Over damped
Under damped
None of these
Critically damped

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Process Control and Instrumentation
Pick out the one which is a first order instrument.

All of these
Mercury in glass thermometer (without any covering or air gap)
Bare metallic thermometer
Bare vapor pressure thermometer

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Process Control and Instrumentation
__________ stability method uses open loop transfer function.

Mikhalov
Nyquist
Ruth
None of these

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Process Control and Instrumentation
A simple pitot tube measures the

Average velocity
Static pressure
Point velocity
Maximum velocity

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Process Control and Instrumentation
Turbine flow meters are suitable for

Aerospace and in air borne applications
Cryogenic flow measurements
Both B and C
Very limited flow ranges

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Process Control and Instrumentation
Helium gas constant volume thermometer is suitable for the measurement of a temperature of __________ °C.

> 800
< 0
< 100
> 0

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