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Process Control and Instrumentation

Process Control and Instrumentation
Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by __________ effect.

Seebeck
None of these
Peltier
Thomson

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

Product
Reactants
Coolant
None of these

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Process Control and Instrumentation
A typical example of a physical system with under damped characteristic is a

U-tube manometer
Thermocouple kept immersed in a liquid filled thermowell
Spring loaded diaphragm valve
CSTR with first order reaction

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Process Control and Instrumentation
__________ type of element is normally not used in the bimetallic thermometers.

Bourdon tube
Single helix
Multiple helix
Flat spiral

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Process Control and Instrumentation
__________ controller has the maximum stabilising time.

P
PD
PID
PI

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Process Control and Instrumentation
Dead zone is the

None of these
Same as transportation lag
Same as time constant
Maximum change in the variable that does not change the reading of the instrument

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