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Process Control and Instrumentation

Process Control and Instrumentation
Measurement of pressure in ammonia reactor is done by

U-tube manometer
Pirani guage
Bourdon gauge
Inclined tube manometer

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Process Control and Instrumentation
Which of the following judges the accuracy of an instrument?

None of these
Static error
Dead zone
Drift

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Process Control and Instrumentation
Characteristic equation is the denominator of __________ loop transfer function.

Neither A Nor B Here
Both A & B Here
Closed
Open

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Process Control and Instrumentation
Which of the following is not a second order instrument?

Pressure gauge with one bellow, two tubes and a tank
Mercury in glass thermometer with covering
Bare mercury in glass thermometer
None of these

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Process Control and Instrumentation
The transfer function of a first order system is

1/(Ts + 1)
None of these
S/(Ts + 1)
1/Ts

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Process Control and Instrumentation
Mass spectrometer is used for the composition analysis of

Isotopes
Solids
Alloys
None of these

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