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Process Control and Instrumentation

Process Control and Instrumentation
Working principle of radiation pyrometer is based on the

Wien's law
Seebeck effect
Kirchoffs law
Stafan-Boltzman law

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Process Control and Instrumentation
The closed loop pole of a stable second order system could be

Both real and negative
Complex conjugate with positive real parts
One real positive and the other real negative
Both real and positive

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Process Control and Instrumentation
Configuration of Bourdon spring tube is never made of __________ shape.

Circular
Spiral
Helical
Semi-circular

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Process Control and Instrumentation
Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is

54
68
36
12

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

Product
None of these
Reactants
Coolant

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Process Control and Instrumentation
Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing

None of these
Nitrogen
Helium
Hydrogen

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