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Process Control and Instrumentation

Process Control and Instrumentation
An aneroid barometer measures the __________ pressure.

Vacuum
Atmospheric
Gage
Absolute

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

Neither A nor B
Open
Either A or B
Closed

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Process Control and Instrumentation
Liquid discharge from a tank or reservoir can not be measured by

Weirs
Mouthpieces
Orificemeters
Notches

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Process Control and Instrumentation
Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic?

O₂
NO
NO₂
CO₂

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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
Over damped
Under damped
Critically damped

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Process Control and Instrumentation
Bimetal strips are not used in

Thermocouples
Bimetallic thermometers
Thermostats
Relays for opening & closing of electrical circuits

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