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Process Control and Instrumentation

Process Control and Instrumentation
In a single tank system, the transfer function of level to inlet flow rate is

1/TS
L(TS + l)
R/TS
R/(TS + 1)

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Process Control and Instrumentation
Thermocouple is suitable for measuring

Liquid temperatures only
Very low temperatures only
Both high and low temperatures
Very high temperatures only

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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.

None of these
Seebeck
Peltier
Thomson

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Process Control and Instrumentation
The term analogous to voltage in a single tank system is the

Liquid volume in the tank
Level of liquid
Heat content of the system
Flow rate

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Process Control and Instrumentation
Bimetal strips are not used in

Thermostats
Relays for opening & closing of electrical circuits
Thermocouples
Bimetallic thermometers

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Process Control and Instrumentation
Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a

Dilatometer
Bimetallic thermometer
Mercury thermometer
Beckman thermometer

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