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Process Control and Instrumentation

Process Control and Instrumentation
On-off controllers are normally used for

Temperature changes
Low loads
None of these
Flow rate changes

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Process Control and Instrumentation
Alphatron measures pressure __________ microns.

< 0.1
> 3
< 3
< 1

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

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

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Process Control and Instrumentation
Liquid discharge from a tank or reservoir can not be measured by

Orificemeters
Mouthpieces
Weirs
Notches

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

Open
Either A Or B Here
Neither A nor B Here
Closed

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Process Control and Instrumentation
The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by

None of these
Reducing value of Kc
Introducing integral control
Introducing derivative control

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