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Process Control and Instrumentation

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

Load
Both A & B
Set point
Neither A nor B

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Process Control and Instrumentation
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Triangular
Log-log
Ordinary
Semi-log

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Process Control and Instrumentation
Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the

Mercury in glass thermometer
Alcohol filled thermometer
Optical pyrometer
Iron-constantan thermocouple

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Process Control and Instrumentation
The transfer function for a P-D controller is

Kc(1+τD s)
Kc τD s
Kc/τD s
Kc(1 +1/τD s)

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Process Control and Instrumentation
The fluid used in hydraulic controller is

Air
Water
Steam
Oil

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

4
0.2
8
1.5

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