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Process Control and Instrumentation

Process Control and Instrumentation
A non-linear chemical system is exemplified by a/an

Mixer
None of these
Non-isothermal CSTR
Isothermal CSTR

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Process Control and Instrumentation
Pirani gauge is used for the measurement of

Liquid level at atmospheric pressure
High vacuum
Very high pressure
Liquid level under pressure

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Process Control and Instrumentation
Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.

Reaumer
Centigrade
Fahrenheit
Kelvin

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

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

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Process Control and Instrumentation
Identify an unbounded input from inputs whose transfer functions are given below

1/S
1/S²
1/(S² + 1)
1

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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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