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Process Control and Instrumentation

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

2/s²
4/s³
2/s³
4/s²

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Process Control and Instrumentation
Dead zone in an instrument must be less than __________ percent of the scale.

1.5
8
0.2
4

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Process Control and Instrumentation
Presence of a small amount of water in the organic systems can be determined by the __________ method.

Dielectric constant end loss factor
Emission spectroscopy
Polarimetry
Electrical conductivity

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Process Control and Instrumentation
pH meter has

No cell
Three cells
Two cells
One cell

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Process Control and Instrumentation
Continuous measurement of specific gravity of a liquid is done by

Hydrometer
Both A and C
Contact-type electric indicators
Displacement meter

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Process Control and Instrumentation
__________ stability method uses open loop transfer function.

Ruth
Mikhalov
None of these
Nyquist

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