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Process Control and Instrumentation

Process Control and Instrumentation
The time constant of a first order process with resistance R and capacitance C is

R - C
RC
1/RC
R + C

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Process Control and Instrumentation
Liquid levels in autocalves are measued by

Simple float
Glass gauge
None of these
Differential float type manometer

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Process Control and Instrumentation
Optical activity of a solution can be determined using a

Refractrometer
Dilatometer
Polarograph
Polarimeter

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

Celcius
Rankine
Reumur
Farenhite

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

Either A or B
Open
Closed
Neither A nor B

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Process Control and Instrumentation
Process degree of freedom indicates __________ number of controllers to be used.

The minimum
Both maximum and the minimum
Nothing about the
The maximum

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