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Process Control and Instrumentation

Process Control and Instrumentation
Pressure of 0.0001 absolute psi can be measured by __________ gauge

Pirani
Thermocouple
Mcloid
None of these

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Process Control and Instrumentation
Polarograph is meant for the analysis of

Isotopes
Solids
Miscible liquids
Gaseous mixture

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Process Control and Instrumentation
Compositional analysis of flue gas coming out of a furnace in respect of O₂ and CO₂% can be continuously done by a/an

Zirconia probe
Chromatograph
Orsat apparatus
Thermal conductivity cell

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Process Control and Instrumentation
In second order underdamped system,

Overshoot increases for increasing damping co-efficient
Large damping co-efficient means smaller damping
Decay ratio = (overshoot)²
Decay ratio = overshoot

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Process Control and Instrumentation
Measurement of sub-zero Celcius temperature in industry is done most commonly by

Bi-metallic thermometers
Thermocouples
Resistance thermometers
Gas thermometers

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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.

63.2
100
87.5
95

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MORE MCQ ON Process Control and Instrumentation

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