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Process Control and Instrumentation

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

Stress
Strain
Weight
Velocity

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Process Control and Instrumentation
In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the __________ variable.

Controlled
None of these
Manipulated
Load

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Process Control and Instrumentation
For an input forcing function, X(t) = 2t², the Laplace transform of this function is

4/s²
2/s³
4/s³
2/s²

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Process Control and Instrumentation
Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic?

NO₂
O₂
CO₂
NO

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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
Dead zone in an instrument must be less than __________ percent of the scale.

8
4
1.5
0.2

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