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Process Control and Instrumentation

Process Control and Instrumentation
Instrumentation in a plant offers the advantage of

Greater safety of operation
All of these
Better quality of product
Greater operation economy

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Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a functioning element.

Pointer
Bourdon tube
None of these
Bulb

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Process Control and Instrumentation
Which of the following measurements can be made by the measurement of emf?

Composition of complex ions
Degree of hydrolysis
PH value
All of these

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Process Control and Instrumentation
A control system has the following transfer function F(s) = (s - 1)(s + 1)/s(s - 2)(s + 4)The initial value of the corresponding time function is

1
43838
-1
44020

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Process Control and Instrumentation
Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature?

Iron-constantan
Chromel-constantan
Platinum-platinum + rhodium
All of these

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Process Control and Instrumentation
__________ type of element is normally not used in the bimetallic thermometers.

Bourdon tube
Single helix
Multiple helix
Flat spiral

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