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Process Control and Instrumentation

Process Control and Instrumentation
On-off controllers are normally used for

None of these
Low loads
Flow rate changes
Temperature changes

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Process Control and Instrumentation
Liquid flow rate in an open channel can not be measured by a/an

Orifice meter
Rectangular weir
V-notch
Cipolletti weir

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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.

Mercury thermometer
None of these
Radiation pyrometer
Bimetallic thermometer

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Process Control and Instrumentation
Bode stability method uses __________ loop transfer function.

Neither A nor B Here
Closed
Open
Either A Or B Here

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Process Control and Instrumentation
Gas chromatography is used for the measurement of

Concentration
Temperature
Pressure
Flow rate

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Process Control and Instrumentation
Photoelectric pyrometers are suitable in the temperature range of __________ °C.

400-1000
400-1600
800-1600
800-2500

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