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Process Control and Instrumentation

Process Control and Instrumentation
The frequency response of a first order system, has a phase shift with lower and upper bounds given by

-π/2, π/2
- ∞, π/2
0, π/2
-π/2, 0

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Process Control and Instrumentation
Dilatometer is used to measure

Stress
Strain
Deflection
Contraction/expansion due to changes in temperature

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Process Control and Instrumentation
Mass spectrometer is used for the composition analysis of

Solids
Isotopes
None of these
Alloys

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Process Control and Instrumentation
Cascade control means

Feed forward control
One feed-back loop
On-off control
More than one feed-back loop

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Process Control and Instrumentation
Which of the following thermocouples has the widest temperature measurement range?

Copper-constantan
Iron-constantan
Platinum-platinum/rhodium
Chromel-alumel

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Process Control and Instrumentation
Platinum resistance thermometer is the international standard for temperature measurement between

Triple point of hydrogen and freezing point of antimony
Both A and B
13.81°K to 903.9°K
Neither A nor B

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