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Process Control and Instrumentation

Process Control and Instrumentation
Feed forward controller accounts for the __________ changes.

Neither A nor B
Set point
Both A & B
Load

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Process Control and Instrumentation
Load cells are used for the measurement of

Weight
Stress
Velocity
Strain

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Process Control and Instrumentation
Which of the following relates the absorption & evolution of heat at the junctions of a thermocouple to the current flow in the circuit?

Peltier effect
Thomson effect
Joule heating effect
Seebeck effect

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

Polarimeter
Polarograph
Dilatometer
Refractrometer

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Process Control and Instrumentation
E.m.f. generated by thermocouples is of the order of

Kilo volts
Millivolts
Microvolts
Volts

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Process Control and Instrumentation
Which of the following is an undesirable dynamic characteristic of an instrument?

Static error
Dead zone
Time lag
Reproducibility

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