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Process Control and Instrumentation

Process Control and Instrumentation
Bode stability method uses __________ loop transfer function.

Neither A nor B Here
Closed
Open
Either A Or B Here

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Process Control and Instrumentation
Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature?

Iron-constantan
Platinum-platinum + rhodium
All of these
Chromel-constantan

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Process Control and Instrumentation
Radiation thermometer can not measure the temperature

Of an object without coming in contact with it
Inside a pressure vessel
Of moving objects at high temperature
Of liquid oxygen

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

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Process Control and Instrumentation
Liquid column manometers are used for measuring the pressure __________ kgf/cm² .

< 3 (gage)
> 2(gage)
< atmospheric
< 10 (gage)

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Process Control and Instrumentation
Which is the strongest paramagnetic gas?

CO₂
NO
O₂
NO₂

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