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Process Control and Instrumentation

Process Control and Instrumentation
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple?

13
0.1
29
3

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Process Control and Instrumentation
The fluid used in hydraulic controller is

Steam
Water
Air
Oil

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Process Control and Instrumentation
Which of the following is an undesirable dynamic characteristic of an instrument?

Dead zone
Time lag
Reproducibility
Static error

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Process Control and Instrumentation
The closed loop pole of a stable second order system could be

Both real and positive
Complex conjugate with positive real parts
Both real and negative
One real positive and the other real negative

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Process Control and Instrumentation
Flow rate of a river is measured by a/an

Pitot tube
Vane meter
Kennison nozzle
Open weir

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Process Control and Instrumentation
Working principle of radiation pyrometer is based on the

Stafan-Boltzman law
Seebeck effect
Kirchoffs law
Wien's law

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