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

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Process Control and Instrumentation
Thermal wells used in temperature measurements should have

High transmissivity of radiation
Low emissivity
Very thick walls
Polished surface

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Process Control and Instrumentation
The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature.

Pressure
Viscosity
Volume
All of these

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Process Control and Instrumentation
The transfer function of a pure dead time system with dead time τd is

E-τds
Τds + 1
1/(τds + 1)
Eτds

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Process Control and Instrumentation
A pyranometer is an instrument used for measuring the

Global radiation
Bright sunshine period
None of these
Beam radiation

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Process Control and Instrumentation
__________ are analysed using a polarograph.

Solids
Liquids
Isotonic solutions
Gases

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