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Process Control and Instrumentation

Process Control and Instrumentation
Pirani gauge is used for the measurement of

Liquid level at atmospheric pressure
Liquid level under pressure
Very high pressure
High vacuum

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Process Control and Instrumentation
Hot wire anemometer is used for the measurement of

Very high temperature
Thermal conductivity of gases
Flow rates of fluids
Flow rates of granular solids

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Process Control and Instrumentation
Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an __________ pyrometer.

None of these
Radiation
Photoelectric
Optical

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Process Control and Instrumentation
The transfer function for a P-D controller is

Kc/τD s
Kc τD s
Kc(1+τD s)
Kc(1 +1/τD s)

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Process Control and Instrumentation
Identify an unbounded input from inputs whose transfer functions are given below

1/S²
1/S
1
1/(S² + 1)

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Process Control and Instrumentation
__________ is the static characteristics of an instrument,

Tine lag
Dynamic error
Drift
Response

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