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Process Control and Instrumentation

Process Control and Instrumentation
In an exothermic chemical reactor, the manipulated variable is the flow rate of

None of these
Product
Reactants
Coolant

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Process Control and Instrumentation
When a bare thermocouple is covered by a protective sheath, the response becomes

Slower and non-oscillatory
Slower and oscillatory
Faster and oscillatory
Faster and non-oscillatory

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Process Control and Instrumentation
Which of the following is not a composition measuring instrument?

Hot wire anemometer
Thermal conductivity cell
Mass spectrometer
Polarograph

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Process Control and Instrumentation
In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable.

Controlled
Load
Manipulated
None of these

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Process Control and Instrumentation
Bourdon tube is never made of

Monel metal
Stainless steel
Cast iron
Phosphor bronze

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Process Control and Instrumentation
Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire.

Increase
Exponential decrease
No change
Decrease

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