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Process Control and Instrumentation

Process Control and Instrumentation
The fluid used in hydraulic controller is

Oil
Steam
Air
Water

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Process Control and Instrumentation
Flow rate through an orifice is __________ the pressure differential.

Inversely proportional to the square root of
Inversely proportional to the square of
Proportional to
Proportional to the square root of

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Process Control and Instrumentation
A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same

Speed of response
Accuracy (± 1% of span)
All of these
Temperature measuring range (- 40°C to 450°C)

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Process Control and Instrumentation
Which of the following controllers has the least maximum deviation?

P-controller
P-I-D controller
P-D controller
P-I controller

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Process Control and Instrumentation
A non-linear system will have __________ steady state values.

Three
More than one
Two
One

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Process Control and Instrumentation
Gas chromatography is used for the measurement of

Concentration
Flow rate
Temperature
Pressure

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