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Process Control and Instrumentation

Process Control and Instrumentation
Paramagnetism method is not used for the composition determination of __________ in gases.

Oxygen
Any of these
Carbon dioxide
Oxides of nitrogen

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Process Control and Instrumentation
The function of a transducer is to

Amplify the input signal
Modify the input signal
Convert the primary signal into a more useful quantity, usually an electric impulse
Codify/decodify the input signal

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

Reumur
Rankine
Celcius
Farenhite

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Process Control and Instrumentation
The second order system with the transfer function 4/(S² + 2S + 4) has a damping ratio of

4.0
0.5
1.0
2.0

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Process Control and Instrumentation
Nichol's chart deals with

Closed loop values vs. open loop values
Frequency response values of controllers
R. vs. phase lag of first order
R. vs. phase lag of second order

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Process Control and Instrumentation
Flow rate through an orifice is __________ the pressure differential.

Inversely proportional to the square of
Proportional to
Inversely proportional to the square root of
Proportional to the square root of

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