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Process Control and Instrumentation

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

Set point
Neither A nor B
Load
Both A & B

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Process Control and Instrumentation
Out of the following themocouple wire insulating material, the highest temperature rating is for

Ceramic fibre
Asbestos
Fibre glass
Teflon

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Process Control and Instrumentation
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple?

3
13
29
0.1

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Process Control and Instrumentation
In second order underdamped system,

Decay ratio = (overshoot)²
Decay ratio = overshoot
Large damping co-efficient means smaller damping
Overshoot increases for increasing damping co-efficient

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

30
50
20
40

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Process Control and Instrumentation
Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference?

Thomson effect
Seebeck effect
None of these
Peltier effect

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