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Process Control and Instrumentation

Process Control and Instrumentation
Polarisation of light forms the working principle of a

Polarimeter
Spectrometer
Chromatograph
Polarograph

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Process Control and Instrumentation
Thermal conductivity measurement com-prises the working principle of a

Spectrometer
Chromatograph
Polarimeter
CO₂ analyser

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Process Control and Instrumentation
Pick out the most suitable instrument for measuring temperature in the range of-40 to 425°C.

None of these
Bimetallic thermometer
Radiation pyrometer
Mercury thermometer

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Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a functioning element.

Pointer
Bourdon tube
None of these
Bulb

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Process Control and Instrumentation
Which of the systems having following transfer functions is stable?

1/(s² + 2s + 2)
Exp(-20s)/(s² + 2s-l)
1/(s²+ 2)
1/(s²-2s + 3)

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Process Control and Instrumentation
The function of a transducer is to

Amplify the input signal
Modify the input signal
Convert the primary signal into a more useful quantity, usually an electric impulse
Codify/decodify the input signal

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