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Process Control and Instrumentation

Process Control and Instrumentation
Positioning controllers are used for

Temperature changes
Flow rate changes
Low loads
High loads

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

Solids
Isotopes
Alloys
None of these

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

None of these
Bulb
Bourdon tube
Pointer

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Process Control and Instrumentation
The thermal emf-temperature relationship of most thermocouples is

Square root
Parabolic
Linear
Exponential

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Process Control and Instrumentation
In a single tank system, the transfer function of level to inlet flow rate is

R/TS
L(TS + l)
1/TS
R/(TS + 1)

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Process Control and Instrumentation
A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is

-45°
-90°
-180°
45°

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