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Process Control and Instrumentation

Process Control and Instrumentation
Composition of alloys can be determined by

Chromatograph
None of these
Polarograph
Refractrometer

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Process Control and Instrumentation
A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if

Kc is reduced
Derivative control action is introduced
Integral control action is introduced
Kc is increased

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.

Increase of thermal conductivity
Differential linear expansion
Volumetric expansion
Increase of pressure

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Process Control and Instrumentation
Which of the following is the dynamic characteristics of an instrument?

Sensitivity
Fidelity
Dead zone
Reproducibility

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

Bright sunshine period
Beam radiation
Diffuse radiation
None of these

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Process Control and Instrumentation
In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.

Ordinary
Semi-log
Triangular
Log-lag

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