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Process Control and Instrumentation

Process Control and Instrumentation
For two non-interacting first order systems connected in series, the overall transfer function is the __________ of the individual transfer functions.

Ratio
Product
Sum
Difference

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Process Control and Instrumentation
Conversion formula for converting amplitude ratio (AR) into decibels is

Decibel = 20 log10 (AR)0.5
Decibel = 20 log10 (AR)
Decibel = 20 loge (AR)0.5
Decibel = 20 loge (AR)

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Process Control and Instrumentation
Compositional analysis of flue gas coming out of a furnace in respect of O₂ and CO₂% can be continuously done by a/an

Zirconia probe
Thermal conductivity cell
Orsat apparatus
Chromatograph

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Process Control and Instrumentation
Alphatron measures pressure __________ microns.

< 0.1
< 3
< 1
> 3

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Process Control and Instrumentation
Reset rate is the another term used for __________ time.

Integral
Dead
Derivative
None of these

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Process Control and Instrumentation
Non-metallic diaphragm used as pressure sensor in instruments is generally made of

Thick paper
Teflon
Bakelite
Synthetic rubber

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