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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)
E-τds
Eτds
Τds + 1

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Process Control and Instrumentation
In second order underdamped system,

Decay ratio = overshoot
Large damping co-efficient means smaller damping
Overshoot increases for increasing damping co-efficient
Decay ratio = (overshoot)²

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Process Control and Instrumentation
Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.

Inconel
Nichrome
Vycor (a glass)
Steel

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Process Control and Instrumentation
Configuration of Bourdon spring tube is never made of __________ shape.

Helical
Semi-circular
Spiral
Circular

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Process Control and Instrumentation
Mass spectrometer is used for the composition analysis of

Alloys
Isotopes
Solids
None of these

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

Gage
Absolute
Vacuum
Atmospheric

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