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Process Control and Instrumentation

Process Control and Instrumentation
Gain margin is equal to the

Gain in P-I controller
Gain in P controller
Reciprocal of amplitude ratio
Amplitude ratio

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Process Control and Instrumentation
Continuous measurement of moisture content of paper in paper industry is done by measuring the

Electrical resistance through the paper
Thermal conductivity through the paper
Magnetic susceptibility
None of these

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Process Control and Instrumentation
Psychrometer determines the

Humidity of gases
Moisture content of solids
Hygroscopic nature of solids
Water of crystallisation

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Process Control and Instrumentation
Maximum differential pressure in liquid manometer is __________ psi.

20
40
50
30

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Process Control and Instrumentation
Liquid column manometers are used for measuring the pressure __________ kgf/cm² .

< 3 (gage)
< 10 (gage)
> 2(gage)
< atmospheric

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Process Control and Instrumentation
The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly

Parabolic
Hyperbolic
Non-linear
Linear

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