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Process Control and Instrumentation

Process Control and Instrumentation
__________ controller has the maximum stabilising time.

P
PD
PI
PID

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Process Control and Instrumentation
Change of angle of refraction with composition comprises the working principle of a

Polarograph
Polarimeter
Refractrometer
Spectrometer

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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
Introducing integral control
Reducing value of Kc
Introducing derivative control

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Process Control and Instrumentation
Volumetric expansion is the working principle of the __________ thermometers.

Mercury in glass
Bimetallic
Constant volume gas
Vapor pressure

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Process Control and Instrumentation
A pyrheliometer is an instrument used for measuring the

Beam radiation
Diffuse radiation
None of these
Bright sunshine period

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Process Control and Instrumentation
Which of the following is a 'contact' pyrometer?

Infra red pyrometer
Resistance pyrometer
Optical pyrometer
Radiation pyrometer

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