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Process Control and Instrumentation

Process Control and Instrumentation
Composition of natural gas is determined by the

Both B and C
Chromatograph
Haldane apparatus
Mass spectrometer

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Process Control and Instrumentation
A stable system is the one

Which satisfies the conditions for a servo problem
For which the output response is bounded for all bounded input
None of these
Which exhibits an unbounded response to a bounded input

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

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

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Process Control and Instrumentation
Dead zone is the

Same as time constant
Same as transportation lag
None of these
Maximum change in the variable that does not change the reading of the instrument

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Process Control and Instrumentation
The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature.

Volume
Pressure
Viscosity
All of these

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Process Control and Instrumentation
__________ are analysed using a polarograph.

Solids
Liquids
Isotonic solutions
Gases

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