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Process Control and Instrumentation

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

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

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Process Control and Instrumentation
High temperature of around 2000°C of incandescent gas mantles is measured by a/an

Radiation pyrometer
Specially designed thermocouple
Optical pyrometer
None of these Here

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Process Control and Instrumentation
The transfer function of a first order system is

S/(Ts + 1)
1/Ts
None of these
1/(Ts + 1)

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Process Control and Instrumentation
Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.

100
87.5
95
63.2

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Process Control and Instrumentation
The transfer function for a P-D controller is

Kc/τD s
Kc τD s
Kc(1 +1/τD s)
Kc(1+τD s)

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Process Control and Instrumentation
Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic?

NO₂
NO
CO₂
O₂

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