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Process Control and Instrumentation

Process Control and Instrumentation
In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.

Neither A nor B Here
Outlet flow rate
Both A & B Here
Level

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Process Control and Instrumentation
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple?

0.1
3
29
13

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

Flow rate changes
Temperature changes
None of these
Low loads

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Process Control and Instrumentation
0n-off control which is a special case of proportional control, has a band width of about __________ percent.

100
75
25

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Process Control and Instrumentation
__________ is undesirable in thermocouples used in industries,

Linear relation of emf to temperature
Non-linear relation of emf to temperature
Oxidation resistance
Corrosion resistance

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Process Control and Instrumentation
Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C?

Photoelectric pyrometer
Thermocouples
Optical pyrometer
Radiation pyrometer

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