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Process Control and Instrumentation

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
1
43838
44020

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Process Control and Instrumentation
__________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'

Rankine
Farenhite
Reumur
Celcius

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Process Control and Instrumentation
An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall. This is the working principle of a

Polarimeter
PH meter
Chromatograph
Polarograph

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Process Control and Instrumentation
A system with transfer function (2S/4S) + 1 is of __________ order.

1st
Zero
2nd
3rd

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Process Control and Instrumentation
Polarograph is meant for the analysis of

Gaseous mixture
Isotopes
Solids
Miscible liquids

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Process Control and Instrumentation
Phase margin is equal to

180° - phase lag
Phase lag + 90°
Phase lag - 180°
Phase lag + 180°

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